Shoto's father Enji Todoroki was always overshadowed by All Might and viewed as only second best, regardless of his impressive crime solving record. Enji developed an obsession with surpassing All Might, to the point of forcing a Quirk Marriage upon Rei Todoroki in order to conceive a child with a Quirk strong enough to be capable of surpassing All Might.
When he was five years old, Shoto started to receive training from his father because of his Half-Cold Half-Hot Quirk. However, the training was too harsh and forced Shoto to cry and vomit. Rei would try to defend him, but Enji refused to listen and would even physically abuse her in front of Shoto.
His father also prevented Shoto from interacting with his older siblings while they played and Shoto began to despise the training and resented his father for abusing him and his mother.
During these dark times, Rei would always be there to support him. Despite the abuse she suffered, she would still try to encourage Shoto to become a hero. There was a time when they watched a TV special on All Might. He encouraged children to make their powers their own even if they inherited their parents' abilities. In line with All Might's advice, Rei told him that he is not a prisoner of his bloodline, and could use his powers to become whoever he desires.
However, Rei eventually broke down from the constant domestic abuse, finding it painful to even look at Shoto's left side because it reminded her of Enji. One day, as she talked with her own mother over the phone about her trauma and recognized that she no longer had the mental stability to raise her son. She was startled by Shoto's sudden appearance at the door, and after seeing Shoto's left side, she snapped and threw boiling water over the boy's face, giving him a burn over his left eye.
Sometime after this incident, Shoto asked his father where his mother was, to which Enji replied that he sent her to the hospital for hurting him. Shoto blamed Enji, saying that everything that happened was his fault. At some point later in his life, Shoto would forget about his mother's supportive words.
Shoto's dark upbringing left him to focus on nothing but rejecting his father. He became cold and distant from other people. Shoto participated in the U.A. Recommendation Entrance Exam, where he encountered Inasa Yoarashi. Inasa tried to ask Shoto about his father but the latter completely blew him off. Both of them race in the same leg of the practical exam and Inasa manages to barely take first place ahead of Shoto. Inasa tried to befriend Shoto yet again, but Shoto insults him and says to get out of the way. 
The next day of school, All Might gives the class a Basic Hero Training lesson. He announces that the class will take part in combat training and instructs them to suit up in their hero costumes. Shoto is paired up with Mezo Shoji. During Katsuki Bakugo and Izuku Midoriya's fight, Shoto is surprised by Katsuki's cleverness and motor skills in using his explosions.
For the second match, Shoto and Mezo are the Heroes against Mashirao Ojiro and Toru Hagakure as the Villains. Mezo tells Shoto the locations of their enemies and reveals they're both barefooted and is likely looking to ambush them.
Shoto instructs Mezo to exit the building for his own safety and then freezes it with his Quirk. Mashirao and Toru end up frozen to the ground and Shoto walks into the room to confront both of them. Mashirao takes a fighting stance and Shoto warns him that if he moves he'll rip the skin off the bottom of his feet.
With both of his opponents frozen, Shoto effortlessly walks past them and touches the fake weapon to secure Team B's victory. He tells Mashirao not to feel bad about his loss because they're simply playing on different levels of skill.
During their next homeroom class, Class 1-A is instructed to choose a Class President, and Tenya Iida suggests they take it to a vote. Unlike the majority of the class, Shoto does not vote for himself and instead votes for Momo Yaoyorozu. In Hero Basic Training class, Class 1-A is assigned to Rescue Training in an off-campus facility. During the bus ride there, many of his classmates discuss their Quirks while Shoto remains in the back of the bus with his eyes closed. Eijiro Kirishima comments that Shoto's Quirk is perfect for becoming a famous hero.
The class reaches the training facility, Unforeseen Simulation Joint, and are greeted by Space Hero "Thirteen", who built the facility. It was built as a training area for aspiring heroes to practice using their Quirks to save people. However, rescue training is interrupted by the arrival of several villains. While many of his classmates are paralyzed with fear, Shoto surmises that the villains have a Quirk user among their ranks that can jam communications. He figures that the villains have a concrete objective in mind, understanding that no villain would plan this ambush without a scheme in mind.
Shoto tries to evacuate with his class, but they are separated and warped into different simulation zones of the U.S.J. Shoto ends up in the Landslide Zone and immediately freezes the villains waiting for him there. He taunts them, saying they should be ashamed for being easily bested by a child. More villains attack, but Shoto easily counters and incapacitates them as well. He warns the villains that if their bodies remain frozen, they will die. He offers to unfreeze them in exchange for information on their objectives.
One of the fearful thugs tells Shoto they came to the U.S.J. to kill All Might. Shoto makes his way to the central plaza to find All Might trapped by Kurogiri and Nomu. Shoto freezes half of Nomu's body to help All Might get free, and boasts that the Symbol of Peace will not die on this day. After getting up, All Might refuses any help from the students, so Shoto stays back and watches in awe of All Might's incredible power as he defeats Nomu.
Shoto believes All Might will handle the rest of the villains as well and decides to stay back, but Izuku Midoriya rushes to help All Might. Just as Kurogiri and Tomura Shigaraki attack, Tenya returns to the U.S.J. with Pro-Heroes as reinforcements.
The villains are forced to retreat, and Shoto gathers outside the facility with his classmates. He overhears Toru talking with Mashirao about the battle in the Landslide Zone. She talks about how amazing Shoto was, but he thinks to himself about how he never even noticed she was there and how he could have accidentally frozen her. Afterward, Shoto and the others return to school.
Two days after the attack on the U.S.J., Shoto and his classmates return to school and are lectured about the importance of the upcoming U.A. Sports Festival during their homeroom class. At lunch, Shoto's interest is piqued when he overhears Ochaco Uraraka and Tenya talking about All Might taking a liking to Izuku.
As the school day ends, Class 1-A is unable to leave their class thanks to the mob of students blocking the exit. The students are from other classes and are there to scope out their competition for the festival. Katsuki makes them all angry with his arrogant comments, putting a target on the backs of the students in Class 1-A.
For the next two weeks, Shoto and his classmates train in order to prepare for the Sports Festival. When the day comes, Shoto and his classmates prepare in their designated waiting area by changing into their P.E. clothes. Shoto approaches Izuku and tells him that despite All Might's interest in Izuku, Shoto believes he is obviously the stronger of the two. He goes on to express his intentions to defeat Izuku in the Sports Festival.
Eijiro tries to diffuse the tension, but Shoto refuses him and reminds everyone that the festival is not a team effort. Before Shoto leaves, Izuku admits that although Shoto is stronger, he will still try his best to come out on top in the festival. Shoto stoically accepts the challenge and leaves the room with the rest of his class to enter the arena.
Once Midnight explains the rules and directs the pledge, the preliminary games begin. The first round is an obstacle race four kilometers around the area. Shoto gets a head start when he freezes the cluttered corridor but is surprised to find that many students were able to avoid his attack. Several giant villain bots then appear to block his path.
Shoto surmises that these are the same bots that the students who took the entrance exam had to face. While impressed with the obstacle, Shoto wishes the U.A. faculty could have offered him something more difficult since his father is watching. Shoto proceeds to freeze the robot while it is off balance and run past it as it falls and blocks the way of those behind him in the race.
Keeping his early lead, Shoto easily clears the next obstacle: The Fall. It is a large canyon that must be trekked by crossing tightropes. Shoto freezes a path through the Fall, but notices Katsuki gaining on him. Shoto reaches the final leg of the race: a Mine Field meant to burden those in the lead. He has to walk through the area carefully, allowing Katsuki to catch up to him. Angered, Katsuki states that Shoto issued his declaration of war to the wrong rival and the two start to fight for first place as they run.
Moments later, Shoto watches in bewilderment as Izuku flies towards him and Katsuki after riding the momentum from an explosion he created. Izuku manages to pass them, but Shoto catches up to him quickly by creating an ice path. Shoto realizes this will help others cross the Mine Field, but he has no choice if he wants to win the race. Before he or Katsuki are able to reclaim the lead, Izuku triggers another explosion that momentarily stops them both. Although close behind, Shoto crosses the finish line second after Izuku. Even though he is unhappy about not taking first place, Shoto qualifies for the second event: The Cavalry Battle.
After Midnight explains the rules of the Cavalry Battle, Shoto forms his team with Tenya, Momo and Denki Kaminari. He explains that this is the strongest formation he could think of. After Shoto explains his strategy to his team, Tenya asks if Shoto will use ice and fire to create diversions. As he responds, Shoto looks into the stands at his father. Shoto claims he never uses his left side in battle. Shortly after the Cavalry Battle begins, Team Todoroki confronts Team Midoriya.
Rival teams rush to the scene as well, forcing Shoto to make a move. He orders Denki to electrocute the other teams while using an insulation sheet created by Momo to protect himself. Afterwards, he freezes the opposing teams and takes a few of their headbands. Shota notes that Shoto is adapting his strategy because he was surprised by how many people evaded his attack in the Obstacle Race.
Even though Shoto's team corners Team Midoriya, Izuku has them keep their distance and remain on Shoto's left side. In this position, Shoto is unable to freeze them without hitting his own teammate. With time running low, Tenya uses his Recipro Burst special move, and in an instant Shoto takes Team Midoriya's headband.
Tenya's special move leaves their team immobilized, giving Team Midoriya the chance to try and reclaim the headband. Izuku charges at Shoto with his Quirk, and Shoto instinctively uses the fire from his left arm to try and counter. Izuku uses his Quirk to break Shoto's defense and steal a headband, albeit not the ten million point one because Shoto switched the headbands around to trick Izuku, but he is too busy berating himself for using his left side to boast.
Time continues to run down and Team Bakugo joins the fray. Both Teams Bakugo and Midoriya make one final effort at the ten million points, but time runs out. Although, Shoto does not notice that Fumikage Tokoyami steals the headband off his head. Afterwards, Shoto is angry with himself for using his left side and decides to confront Izuku at the student entrance.
At first, Shoto uses silence to intimidate Izuku and when he finally speaks, says the power that came from Izuku during the Cavalry Battle was the same as All Might's. Then, much to Izuku's shock, Shoto asks if he is All Might's "secret love child". Izuku tries to explain that is not the case, but Shoto figures out that there is a secret connection between the two. Continuing, Shoto say that because he is the son of the No.2 Hero Endeavor, he has even more reason to defeat Izuku.
Shoto explains to Izuku that Endeavor is obsessed with defeating All Might, and although he was never able to do it, he is still trying to through Shoto. Shoto reveals that he was born out of a Quirk Marriage and explains some of his past. Endeavor used his money to buy out Rei's family to implement a Quirk marriage with the intent of creating a powerful child to surpass All Might. All of Shoto's memories of his mother are of her crying, as well as when she called his left side unbearable and poured boiling water on his face.
Shoto tells Izuku all of this to explain his reason for picking a fight with him: Shoto wishes to reject his father and his left side, and plans to win the Sports Festival using only his right side. As Shoto walks away, Izuku explains his own reasons for wanting to win and then promises to do his best to defeat Shoto.
Later on, Midnight announces the Sports Festival finals will be a one-on-one fighting tournament. Shoto notices that he could face Izuku in the second bracket, and hopes that he wins. During the recreational games, Shoto uses the opportunity to mentally prepare himself.
Following Izuku's match with Hitoshi Shinso, Shoto comments that he figured Izuku would win. On his way to the ring for his match against Hanta Sero, Shoto encounters his father. Enji calls Shoto's behavior disgraceful and says that if he had used his fire, he could have easily crushed the past two events. He goes on to say that Shoto needs to end his childish rebellion and see to his duty to surpass All Might. He calls Shoto his greatest masterpiece, far superior to his siblings.
Shoto responds that surpassing All Might is all his father ever has to say and declares that he will only use his mother's Quirk to win. His father replies that Shoto will soon discover the limits to that power. Enji's words infuriate Shoto, and he carries this anger with him into the fight.
As the match begins, Hanta nearly throws Shoto out of bounds by wrapping him in tape and swinging him towards the margin line. Shoto fiercely retaliates by freezing Hanta in a humongous pillar of ice and frees himself by breaking through the now frozen tape. Hanta is immobilized and Shoto is declared the winner. The former comments on how Shoto went overboard and Shoto apologizes and explains that he was angry, and uses his left side to melt Hanta out of the ice.
Six matches later, Shoto watches Katsuki's battle with Ochaco closely. Once the first round of matches ends, Shoto takes to the ring and meets his second round opponent: Izuku. As soon as their fight begins, Shoto leads with an ice attack, but Izuku counters with a Delaware Smash. Shoto creates a block of ice behind him to keep from being blown out of bounds, as he expected Izuku to injure himself in order to destroy the ice.
Shoto persistently attacks until Izuku breaks all of the fingers on his left hand. Shoto withstands the smash and creates a tower of ice to run up and close the distance between them. Izuku uses another smash to break the ice steps apart, but Shoto avoids it and nearly freezes Izuku at close range. In order to break the ice that is slowly freezing him, Izuku sacrifices his entire left arm and lets off a full powered smash. Shoto withstands the aftershock of the smash using an ice blockade. While recovering, Shoto notes that this attack from Izuku was significantly more powerful than the previous ones, and that he realizes his opponent is trying to keep him at a distance. Izuku is startled by Shoto's combat awareness, and some viewing fans even comment that Shoto is already stronger than the average Pro-Hero.
Questioning Izuku's durability, Shoto asks if he is already too worn out from defending against the ice. Izuku does not respond and instead notices that Shoto is shaking because of the frost building up on the right side of his body. Shoto apologizes for the intensity of the battle and thanks Izuku for helping him irritate Endeavor by using only ice rather than fire. Understanding that Izuku has no healthy fingers left, Shoto sends an ice attack at him that he expects to finish the match. Shoto is shocked when Izuku declares that he is not finished yet and uses his already broken finger to counter the ice once again.
Shoto asks why Izuku is going so far, to which he replies that Shoto is trembling, pointing out that Shoto's body can only take so much cold because Quirks are physical abilities. He also surmises that Shoto could offset his temperature by using his fire, but knows Shoto refuses to do so. He challenges Shoto to put more effort into the battle, stating that everyone else is giving it their all while Shoto is only using half his power. Izuku provokes Shoto by claiming that he has yet to injure him in this battle, demanding that Shoto use his full strength.
Agitated, Shoto asks Izuku if Endeavor bribed him. He rushes Izuku, albeit much slower than before because of the frost building on his body. Shoto closes in on Izuku, but as soon as he lifts his right foot to attack Izuku strikes him in the torso. Shoto is partially able to freeze Izuku's other arm but is still sent flying away. Shoto recovers and tries to use another ice attack, but it is much slower than the previous ones and Izuku is able to avoid it. They both move into closer quarters and fight in spite of their afflictions.
As Izuku dashes at Shoto, the latter attempts to freeze him. Without any fingers left to use, Izuku pulls back his thumb using his cheek in order to release another smash to blast Shoto away. Shoto asks again why Izuku is putting himself through so much pain, to which his opponent replies that he is prepared to do whatever it takes to become a hero. Izuku headbutts Shoto and challenges him to use his full strength again, telling him to stop screwing around because even if he wants to reject his father, Shoto does not have the right to be the best if he is not prepared to do his best.
Izuku's words make Shoto recall the terrible memories of his past. As more frost covers his body, Shoto remembers him and his mother being abused by Endeavor. As well as a time where he pleaded to his mother about not wanting to become like his father, to which she replied by asking if Shoto still wanted to become a hero. Izuku capitalizes and strikes Shoto with another punch, and declares that he will surpass him. While reeling from the attack, Shoto is reminded of his childhood.
Still haunted, Shoto states once again that he will reject his father, but this time Izuku adds that Shoto's Quirk is his own, and not his father's. This invokes one last memory, one that Shoto had long forgotten. He and his mother were sitting down watching a special on TV about All Might, who encouraged all children to use their Quirk's in their own way in spite of inheriting them from their parents. Rei added that Shoto must remember to stay true to himself, that he is not a prisoner of his lineage, and that it was okay to use his power to become who he wants to be.
Impassioned, Shoto ignites his flames and astounds the entire arena with his display of blazing power. When the flames die down a bit and the ice melts from Shoto's body, he says that now Izuku is the one screwing around for helping his opponent. Shoto adds that just like Izuku, he desires to become a hero one day too. Having freed Shoto from his self-repression, Izuku smiles and comments that Shoto's power is amazing, to which he responds with an affecting smile of his own.
With the battle reaching its climax, Shoto asks why Izuku is grinning in such a hopeless situation and pleads for Izuku not to blame him for what happens next. They both build up in preparation for one final clash. Ken Ishiyama and Midnight decide to step in, fearing one of them might die. Shoto sends a large wave of ice at Izuku, and the latter evades by jumping above it. As he flies towards Shoto, he prepares a full power smash in his healthy arm, and Shoto counterattacks with a powerful fire blast. Just before he uses the fire attack, Shoto thanks Izuku.
Even though Cementoss builds a wall between them, Shoto's fire attack and Izuku's wind pressure create an explosion that destroys the entire fighting ring. The smoke clears, and Izuku is revealed to be unconscious outside the ring. Everyone is taken aback by the battle's outcome, and Shoto stands victorious with half his shirt burned off.
Shoto exits the arena and encounters his father in the corridor. He praises Shoto for using his left side but tells him he needs to control it. Enji offers Shoto the chance to become his sidekick after graduation, but Shoto ignores it and reveals he has not rescinded his disavowal of his father. He says the only reason he used his left side is that he forgot about Endeavor during that moment completely. As he walks away, Shoto says he remains unsure about his fire power and suggests he may not need Endeavor at all.
Once the second round finishes, Shoto returns to the arena with a new uniform to face off against Tenya. He starts the match by trapping Tenya between two rows of ice. He goes in for the win using another ice attack, but Tenya evades using a standing long jump and activates his Recipro Burst technique in mid-air. Shoto is able to evade Tenya's initial roundhouse kick but falls victim to the subsequent attack thanks to Tenya's blinding speed. Tenya tries to swiftly carry Shoto out of bounds but is stopped suddenly. He realizes that his engines have been frozen, and questions when Shoto did so.
Shoto reveals that it was after getting hit with Tenya's second kick and suggests that Tenya had forgotten his ability to freeze with precision because he's only been showing off ranged attacks during the festival. After freezing Tenya's body completely, Shoto admits that his opponent's Recipro Burst was too fast to dodge. Midnight declares him the winner and he advances to the final round. After Katsuki advances to the finals as well, Shoto meets his menacing glare.
They meet in the waiting area when Katsuki accidentally barges into the wrong room. Before Katsuki interrupted him, Shoto was mulling over the conflicting memories of his mother's breakdown and Izuku's encouragement. Katsuki tries to intimidate Shoto by slightly blasting the table and warning him to do his best. Mostly unphased, Shoto replies that Izuku told him the same thing, and comments that he was foolish for focusing more on helping him than winning their fight. He asks Katsuki if Izuku was helpful during their childhood, but this only infuriates the former. Katsuki kicks over the table and yells for Shoto to ignore Izuku and his family issues so that he can use his fire during their bout. He angrily exits the room and states he wants everyone to know he can beat Shoto at full strength.
Their battle begins with Shoto using a more controlled version of the giant ice attack he defeated Hanta with. Katsuki endures the ice blast by tunneling through it using his explosions. Katsuki rushes Shoto and Shoto moves to counterattack, but Katsuki evades using a mid-air explosion and grabs onto Shoto's left side and throws him. Shoto creates and surfs an ice wave to avoid going out of bounds. Katsuki attacks again and Shoto is able to stop him by evading his blast and grabbing onto his forearm. Rather than using the flames in his left arm (the same arm he used to grab Katsuki), he simply tosses him away.
Shoto mulls over his opponent's words, internally apologizing to Katsuki because he is still too unsure about what his left side means to him to use it. Then suddenly, Shoto is once again encouraged by a shouting Izuku, who tells him not to give up and to do his best. Impassioned once again, Shoto ignites his flames and prepares to counter Katsuki's next move. Katsuki readies his special move: Howitzer Impact, but Shoto is haunted by memories of his parents and decides to extinguish the flames and leave himself completely open to Katsuki's powerful explosion. Shoto is knocked out of bounds, and Katsuki is declared the winner.
At the Sports Festival's award ceremony, Shoto is presented with the silver medal by All Might and he inquires to why Shoto refused to use his fire. Shoto replies that although Izuku opened his eyes, he still doubts himself and believes his path to becoming a hero is still clouded. He also mentions that he understands why All Might has such an interest in Izuku. After returning to class, Shoto and the rest of Class 1-A are excused from the next two days of class.
The next day Shoto decides to visit his mother in the psychiatric ward, much to his sister's disapproval. Throughout his life Shoto believed the sight of him would only cause his mother more pain, so he never visited her. Nevertheless, Shoto needed closure from his mother so that he could continue on his path to becoming a hero without anything holding him back. He musters up the courage to approach her, and resolves to talk over everything and free her from the ward's custody.
Once class resumes at U.A., Shoto joins his class in learning about Hero Informatics. Shota reveals the Pro-Hero draft results, with Shoto leading the entire class with 4,123 offers from pros. Midnight joins the class to help the students choose their hero names. Shoto opts to choose his own first name for his code name.
After choosing code names concludes, Shota informs his students that they will choose a hero agency to intern at for a week from a list of their nominations. Shoto notices that his father's workplace is among his choices. When the first day of the internships arrive, Shoto meets with his class at the train station to get his new costume and travel to the office of his choice. Before he departs, Shoto notices that Tenya appears to be unsettled by news of his brother's assault at the hands of Hero Killer: Stain
Shoto reaches Endeavor's agency and gets greeted by his father. He claims Shoto has finally chosen to follow him, but Shoto refutes that, saying that he is following his own path. Endeavor immediately decides to take Shoto out into the field, and they leave for Hosu, Tokyo to track down the Hero Killer.
While in Hosu, Shoto and his father notice an explosion in the distance. Endeavor rushes towards the event, but Shoto receives a message on his cellphone from Izuku with a location on it. He tells his father to go handle the event while he heads to the location, and requests for his father to send him reinforcements.
Shoto arrives at a location just in time to save Tenya from Stain and forces the villain back using a blast of fire. He then scolds Izuku for not supplying any more details in his message since he was almost too late. Shoto tells Izuku that he figured out his message was likely a cry for help and that Pro Heroes are on the way. He uses waves of ice to keep Stain at bay while securing his allies at the same time. Stain evades another stream of fire and Shoto declares he will not allow the hero killer to take anymore lives.
Izuku warns Shoto that Stain's Quirk can paralyze him if he gets some of his blood. Shoto plans to fight at a distance, but Stain catches him off guard and nearly takes his head off with a throwing knife. Shoto narrowly moves his head out of the way and the blade cuts his face open. Stain attacks Shoto from above, but he blocks it using a block of ice. Shoto notices that Stain threw his katana at the same time as a distraction. Shoto's opponent grabs the collar of his costume and almost brings him close enough to lick the blood from his cheek, but Shoto uses his flames in time to repel him.
Stain praises Shoto for his strength and is forced back by combination attacks of both fire and ice. Tenya pleads for Shoto to stop because "Ingenium" must be the one who defeats the hero killer. Shoto replies that his statement is strange because he never saw the scowl of vengeance on Ingenium's face that he sees on Tenya and he knows there is a lot going on behind the scenes in his family as well. He creates a giant wall of ice, but Stain slashes through it and tells Shoto that it is foolish to block his own view when his opponent is farther than him. Stain then stabs Shoto's left with two throwing knives and moves above him.
Just as he is about to stab Shoto from above, Izuku unexpectedly grabs him and tackles him away. Shoto guesses that Stain's Quirk may have a time limit, but Native explains that Izuku was the last to suffer from it, so that cannot be the case. Izuku comes to the conclusion that Stain's Quirk's effectiveness varies depending on blood type, which the hero killer confirms.
Shoto states that he would have liked to carry the injured away but Stain will not give him the opening to do so. He and Izuku decide to hold the villain off until reinforcements arrive. With Shoto already bleeding, Izuku volunteers himself to fight in close quarters while Shoto supports him from a distance. Although reluctant to take the risk, Shoto agrees to protect Tenya and Native together with Izuku. He recalls worrying about Tenya ever since Ingenium was attacked because he recognizes someone who is acting on pent-up resentment. Shoto also knows too well how that negativity can cloud someone's judgment.
He remembers visiting his mother and how it cleared up his own perception of her. He told her everything that happened, as she apologized for burning him and forgave Shoto for not visiting her for a long time as she understood his reasons. She also encourages him to move forward in his life without anything holding him back, as that would be her salvation. That is why he decided to intern with Endeavor's agency, not because he has forgiven his father, but because he wishes to learn from the experience of the number two hero. Shoto realizes now that everything could have been simpler for him, but never noticed until Izuku opened his eyes with just a few words.
With the battle's intensity increasing, Stain heightens his strength and overpowers Izuku. He cuts open his leg and licks the blood to paralyze him. Shoto tries to support him, but Tenya again pleads for them to stop. Shoto rejects his plea and tells Tenya to stand up if he wants them to stop. Stain dashes towards Shoto, evading the ice the latter sends at him. Stain slashes through a wall of ice and goes to attack Shoto, who responds by releasing his fire and encourages Tenya to never forget who he wants to become.
As Shoto tries to force Stain back, the villain inches closer to him every time he evades a stream of flames. Shoto uses his ice as well, but Stain is too fast and closes the distance between them. The Hero Killer comments that Shoto is careless because he is too focused on his Quirk and nearly takes him out using the katana. Tenya breaks free from the paralysis in time to save Shoto using his Recipro Burst to break the katana and kick Stain flying back.
Tenya apologizes for getting his friends involved as he states his eyes have been opened, but Stain refutes this and states that Tenya will never reform into a true hero. Shoto tells Tenya not to listen to the villain's words, but Tenya agrees that he is not a true hero. Nevertheless, Tenya believes he cannot give up or else the name of Ingenium will die. Stain attacks again, but Shoto forces him back using his fire. Native urges Shoto to flee, but he refuses and says that Stain will not give him an opening. Although Shoto realizes that Stain's Quirk is not especially effective in a battle against multiple opponents, he notes that Stain has only gotten more tenacious in his attempts to kill his targets.
While Shoto keeps Stain at bay using ranged fire attacks, Tenya asks him if he can regulate temperature. Shoto responds by admitting he is not used to doing so with his left side yet, but Tenya asks him to freeze his legs without blocking the exhausts. Annoyed with Shoto's interference, Stain maneuvers behind him and throws a knife at his head. Tenya moves in front of the blade and it stabs him in the arm and gets pinned down by a second knife. This gives Shoto enough time to do as Tenya asks and cools down the radiators on his leg. This allows Tenya to unveil his new special move: Recipro Extend. Then Tenya and Izuku rush Stain by using their Quirk's to scale the alleyway and strike the Hero Killer simultaneously.
Stain reels back from the students' teamwork and tries to slash Tenya, but he evades and kicks the villain higher into the air. Realizing that this is his chance, Shoto blasts Stain and finally connects with a stream of fire. He secures his allies by using ice to lighten their falls and tells them to get ready to continue fighting. However, Shoto looks up and sees they have actually defeated their opponent.
Shoto restrains the defeated Hero Killer using rope and follows Tenya, and Native carrying Izuku out to the street. He comments that they barely won three on one with Stain making several mistakes and that it is likely Stain became flustered and forgot Izuku's recovery time, making him unable to compensate for their last joint assault. They are met by several Pro-Heroes who offer to call an ambulance and the police. Tenya cries and takes a moment to ask for his friend's forgiveness and Shoto says that Tenya is the class president and needs to pull himself together.
Then suddenly the last Nomu swoops down from the sky and snares Izuku. Before it gets too far away, Stain recovers and uses his Quirk to stop it. Then he saves Izuku by grabbing him and stabbing Nomu's brain. In spite of being heavily injured, Stain states that the "fake" pro heroes and the pathetic criminals in society must be purged to create a more just society. Shoto and everyone are taken aback by his actions. Stain challenges all the heroes to try and stop him. The bandages over his face fall off and he releases a malicious aura that paralyzes everyone with fear, including Shoto. The Hero Killer prepares to attack, but his perforated lungs cause him to lose consciousness.
Shoto, Izuku, and Tenya are taken to Hosu General Hospital and spend most of the night without sleep. The next morning, the trio discuss their encounter with the Hero Killer and Shoto claims that he likely spared their lives. Their conversation is interrupted when the Chief of Hosu City Police, Kenji Tsuragamae arrives. He informs them that Stain is undergoing treatment for his injuries and because they acted on their own without permission, they must be punished.
Shoto is outraged at the idea that the Police expected he and his peers to follow the law and allow people to die as a result, arguing that it is the job of a Hero to save others. He nearly lashes out, but Gran Torino stops him and pleads for him to hear Kenji out. Since there were not enough witnesses to report the incident regarding Stain the incident will remain undisclosed. However, as a result, Izuku, Shoto, and Tenya will not get any recognition for their valiant efforts. After Kenji shows his gratitude Shoto says that the chief should have lead the conversation with that, and the trio thank him for pardoning them.
The following day, when Izuku returns to their room, Shoto informs Izuku that Tenya got his medical results back. Tenya reveals that his hand was badly damaged in the battle and it will not heal so it serves as a reminder of his un-heroic deeds. Izuku promises to do the same and they make a pact to become stronger.
Shoto apologizes for supposedly being cursed, as it seems that whenever he is involved in a skirmish, his friends' hands get messed up. Izuku and Tenya are surprised that Shoto can crack a joke, but he claims to be completely serious, calling himself a "hand crusher" and leading the young Heroes to laugh together.
When the week concludes and the internships end, Shoto returns to U.A. High. His peers question Izuku, Tenya, and him about the incident in Hosu. Sworn to silence by the Police Chief, Shoto covers up the truth and says Endeavor saved them all from Stain. In their next Basic Hero Training class, the class participates in rescue races.
During the first race, Shoto notices Izuku's new moves are very similar to the way Katsuki flies around using his explosions.
One week before final exams, Aizawa reminds Class 1-A to study for their written and practical components before ending class. Denki and Mina admit they havent studied at all because of the events that have taken place throughout the term. Having placed fifth on the midterms, Shoto comments that if they paid attention in class they wouldn't have a problem.
During lunch, Shoto sits with Izuku, Tenya, Shoto, Ochaco, Tsuyu Asui, and Toru. He listens as they discuss what they believe the practical test will contain. They learn from Itsuka Kendo that the test may consist of fighting against robotic villains. Back in class, Denki and Mina are delighted by this, but Katsuki is annoyed by their behavior. He yells at them, and then openly claims he will receive a better grade than both Shoto and Izuku before storming out.
A week passes and Class 1-A finishes the written section of the finals. They change into their hero costumes and join their teaches at the practical exam area. There, Principal Nezu announces the practical portion will involve pairs of students facing off against one teacher. Shoto is paired with Momo Yaoyorozu. Prior to that day, the teachers discussed the pairings. Aizawa states he paired Shoto with Momo because they both relied too heavily on their Quirks, so he would erase them.
After the first three matches conclude, Shoto and Momo meet in a replica city. He asks if Momo is nervous about facing their homeroom teacher and says he has a plan. The match begins and they run through the city. Shoto instructs Momo to keep making small objects so they will notice when Aizawa is nearby, and once he is Shoto plans to distract him while Momo runs for the exit. He instructs Momo not to get separated from him until then. Momo reluctantly agrees and they continue on. She makes Russian matryoshka dolls, prompting Shoto to tell her if he notices anything strange. She commends Shoto for coming up with a quick plan, but he replies it is nothing special.
Momo suddenly stops and tells Shoto that although they both started as students who got into U.A. through recommendations; she has not done anything to stand out like he has. Shoto interrupts, noticing that she has stopped producing the dolls. They realize that Aizawa is close, but he surprises them when he reveals himself hanging from a power line. Shoto tries to freeze him, but Aizawa has erased his Quirk. He kicks at Aizawa and tells Momo to run, but is quickly restrained by his teacher. Disappointed in Shoto's plan, Aizawa says he was planning to catch Shoto anyway and hangs him from the power lines. Shoto replies that he could burn or freeze his restraints at any time, but Aizawa throws caltrops below him. Aizawa also mentions that Shoto should have talked over his plan more with Momo.
Aizawa leaves and Shoto ponders his words, recalling that Momo wanted to say something earlier about the plan. Momo returns shortly after and apologizes, but Shoto warns her Aizawa is in pursuit. Momo becomes nervous and indecisive, so Shoto decides to ask her if she has an idea. He apologizes for not talking it over more. Momo claims her plan cannot work if Shoto's failed, but Shoto claims that Momo is more fit for planning. Shoto reveals that he believes in her leadership so strongly that he voted for her to be class president. Shoto's words help reinvigorate Momo's confidence. She throws the dolls at Aizawa, revealing the flash grenades inside. The explosion of light gives Momo enough time to free Shoto, and she claims to have a special plan to defeat their homeroom teacher.
Shoto asks Momo what her idea is but Aizawa interrupts and attacks them. Shoto tries to counter using his fire, only to realize his Quirk has been erased again. Momo instructs them to run and find a place to hide outside Aizawa's field of vision. As they are running, they discuss how Aizawa's Quirk has weakened since the attack on the U.S.J. and Momo states it is a bad idea to assume they cannot use their Quirks. Aizawa closes in on them and Momo says there will be a moment when their Quirks will come back. When that moment comes and Aizawa blinks, Shoto attacks using his Giant Ice Wall technique.
Now protected by the giant ridge of ice, Shoto asks what Momo's plan is. He awkwardly turns around to notice her opening her shirt to create a weapon similar to Aizawa's scarf. She replies it is slightly modified to her own version and goes on to share her plan with Shoto. He does not object and they run from behind the ice wearing dark cloaks. Aizawa moves quickly and restrains them with his capture weapon, but Momo reveals their upper bodies were only mannequins. She creates a catapult and uses the opening to send the weapon at him. Shoto uses his flames to heat the weapon made from shape memory alloy, causing it to tighten and bind Aizawa.
They handcuff their teacher soon after and Shoto questions if the plan went too smoothly. Momo admits she initially missed the catapult lever, giving Aizawa an opening to stop them. When she asks why Aizawa hesitated, he claims to have been cautious of Shoto because he was still cloaked at the time. Shoto thanks Momo for her plan and she starts to get teary-eyed. He asks if she feels sick and offers advice, but she says it is nothing.
After all practical exams conclude, Class 1-A returns to class the next day. Shoto learns he passed both the written and practical portions of the finals, and will attend training camp over the summer. His classmates opt to go to the mall to prepare, but Shoto decides to visit his mother instead.
A day prior to summer break, Izuku invites Shoto and the other boys from Class 1-A to the pool for endurance training. They hold competitive swimming races and Shoto wins his leg by freezing the pool instead of actually swimming. Just before Shoto, Izuku, and Katsuki compete in the final race, Shota arrives and tells them they're out of time to use the pool and kicks them out. Afterward, Shoto, Tenya, and Izuku recall their battle with Stain and how far they've come as budding heroes in the making.
Summer break begins and Class 1-A rides a bus to a forest reserve belonging to the hero team: The Wild, Wild Pussycats. Pixie-Bob and Mandalay introduce themselves and challenge the students to reach base camp past the forest in three hours. When most of Shoto's peers refuse, he and his class are forcibly thrown into Beast's Forest by Pixie-Bob's quirk.
A monster created from dirt clods immediately attacks Minoru. Shoto works together with Izuku, Katsuki, and Tenya to defeat it. Class 1-A works together to fight their way through Beast's Forest. They encounter several different dirt monsters. Shoto and Katsuki take one out together, much to Katsuki's displeasure. Class 1-A doesn't arrive at basecamp for several more hours. Well over their time limit, Class 1-A arrives at the base camp exhausted and battered. Mandalay reveals the time limit was the expectancy for actual heroes, not the students. Mandalay's nephew Kota, punches Izuku in his groin. Katsuki says the boy is precocious, and Shoto compares the two to each other. The Pussycats serve the students dinner and the boys bathe in the hot springs afterward.
Training begins the next day. Shoto trains by sitting in a pot of bathwater and changes its temperature by constantly switching between fire and ice. Later that day, the students are tasked with cooking curry for themselves. Shoto uses his fire to light several of the stoves, including one for Ochaco and Mina. He smiles because he's able to use his fire without restraint, and can use it to help others. After another day of training, Shoto asks Izuku why he asked Shota about All Might. He gives Izuku advice on handling a delicate situation with Kota. Shoto tells him that actions inspire others, not just words.
That night, Shoto and Katsuki are paired together for the test of courage. Class 1-A students roam the forest while Class 1-B students try to scare them. The duo is slightly shaken by a Yui Kodai and Ragdoll. The League of Villain's Vanguard Action Squad attacks the camp. Shoto, carrying an injured Kosei Tsuburaba, runs through the forest with Katsuki. While going back to the facility, Shoto and Katsuki encounter Moonfish admiring a severed arm on the ground. The villain turns his attention to Katsuki and Shoto.
Katsuki rushes Moonfish, prompting the villain to attack with his quirk. Shoto blocks the tooth blades with an ice wall and warns Katsuki not to rush into a fight. The blades pierce the ice and nearly hit Katsuki, only to be intercepted again by Shoto's ice. Moonfish evades the ice attack and moves fluidly through the treetops. Frustrated, Shoto comments that Moonfish likely has a lot of experience fighting and they need to be careful. Katsuki wants to counterattack but Shoto sternly warns him not to start any fires. Shoto analyses their situation and realizes that retreat isn't possible because of the poison gas surrounding them. He concludes that the villains are trying to drive the students into a corner. 
Shoto is unable to fight properly as he's carrying Kosei, and he can't use his fire without risking the lives of those in the forest. He does his best to continue defending against Moonfish's onslaught. Katsuki becomes irritated that he's unable to fight back and expresses his desire to attack Moonfish with a big explosion. Shoto advises against it and Katsuki replies that Shoto needs to freeze the trees should they get set ablaze. Shoto still refutes this and explains the explosion might impair his vision, making him unable to see the fire.
Suddenly Shoto notices Mezo carrying Izuku towards them while running from a gigantic, berserk Dark Shadow. Mezo pleads with Shoto and Katsuki and asks them to create light with their quirks. The rampaging Dark Shadow knocks Moonfish out of the air and crushes him. Shoto prepares to use his fire to weaken Fumikage's quirk, but Katsuki tells him to wait until Dark Shadow finishes Moonfish off. As soon as Dark Shadow defeats Moonfish, Shoto and Katsuki use their quirks to create light and free Fumikage from Dark Shadow's control.
Shoto admits he's surprised Fumikage's Dark Shadow was able to defeat Moonfish so easily after barely being able to defend against the villain himself. Shoto, Izuku, Mezo, and Fumikage decide they need to protect Katsuki at all costs. They form the Bakugo Escort Team and decide to take a shortcut through the forest to get him back to the facility. Katsuki claims he doesn't need protection, but Shoto tells him they will surround him for the time being.
While on their way to base camp, the group happens upon Ochaco and Tsuyu fighting with Himiko Toga. Himiko retreats and Izuku asks them to join their group. The girls question why Katsuki is not with them, forcing the group to realize that Katsuki is missing. Mr. Compress appears and reveals that he took him with his "magic".
Izuku demands the villain return Katsuki and Shoto agrees while attacking with a wave of ice. Mr. Compress easily evades by jumping through the treetops and says that the League of Villains wish to show him more options than the fanatical world of heroism he's drowning in. Mezo points out that Fumikage is missing as well and Shoto mulls over the fact that the villain was able to snatch two of his strongest classmates without a sound. Angry, Shoto replies to Mr. Compress' monologuing by telling him not to underestimate the students. Mr. Compress explains he took Fumikage because of how easily and violently he defeated Moonfish.
Shoto hands Kosei off to Ochaco and attempts to freeze Mr. Compress with a massive ice wave. He's surprised when Mr. Compress evades him again and says that the villains are going to take their friends. Izuku says they can't and Shoto agrees to chase after Mr. Compress in order to stop them.
Shoto and company chase after the masked villain, but he's too quick for them to catch on foot. Izuku devises a plan to use Ochaco and Tsuyu's quirk to propel the boys through the air. Ochaco nullifies their gravity, Tsuyu throws them and Mezo guides them through the air until they're able to tackle Mr. Compress into the ground. They land directly in front of Dabi, Himiko and Twice.
Dabi launches his flames towards the boys, allowing Mr. Compress to escape. Shoto manages to dodge Dabi's flames, but Izuku and Mezo do not. In an instant, Twice appears behind Shoto and attacks him, but Shoto blocks the attack with his ice. Shoto continues to hold back Twice until Mezo reveals that he took the marbles from Mr. Compress. Shoto, Mezo, and Izuku flee, but they get cut off by the sudden arrival of Kurogiri.
Mr. Compress reveals he compressed Shoto's ice to fool the students, and reveals he has the real marbles trapped in his mouth. Yuga shoots his laser from behind a bush and blasts Mr. Compress' face. He drops the marbles out of his mouth. Mezo is able to save Fumikage, but Dabi grabs the second marble before Shoto can get to it. Shoto watches in horror as Katsuki reverts to his normal form and is forced into Kurogiri's warp gate.
The following day, Shoto visits Izuku and his classmates in the hospital. He runs into Eijiro and they agree they can't stay home while their friends remain injured. They both overhear Momo talking to All Might about a tracking device she placed on a Nomu. Shoto along with many students from Class 1-A visit Izuku on the day he wakes up from his injuries. 
Izuku cries and laments his failure because he was unable to rescue Katsuki. Eijiro pleads with him to try and rescue Katsuki from the villains. He reveals that he and Shoto were at the hospital the previous day and overheard Momo talking to All Might and the Police. Momo put a tracking device on one of the villains. Shoto and Eijiro asked her to create a second receiver so they can go after Katsuki themselves.
Shoto says that while he was a target for the villains to kill, Katsuki was taken without being injured. This doesn't mean the villains won't kill him eventually, which is why Shoto and Eijiro feel the need to go rescue him. Tenya argues that is a foolish idea and most of Class 1-A agree it should be left to the Pro Heroes. Mezo points out that he understands Shoto's frustration because Katsuki was stolen right in front of them both. Even so, Mezo says that they shouldn't act on their emotions. The doctor enters the room and excuses Izuku's peers so that he can get checked on. Eijiro tells Izuku he and Shoto plan to move out that night.
That night, Shoto and Eijiro wait by the hospital for Momo and Izuku's decisions. Momo walks out of the hospital doors with Izuku right behind her. Eijiro asks for Momo's answer but it's interrupted by Tenya's arrival. He's frustrated that Izuku and Shoto out of all people would want to break the rules since they were already pardoned for doing so during the Hosu Incident. Izuku tries to calm him down and Tenya ends up punching his friend, shocking Shoto, Momo, and Eijiro.
Tenya explains that he's worried about the entire class and not just Katsuki. He's worried his friends could end up like his brother and is hurt that they don't seem to care about his feelings on the matter. Shoto tells Tenya that their plan isn't to attack the villains head on and they want to rescue Katsuki without fighting. Momo says she trusts Shoto's judgment and she's going along with them so she can stop the boys if things go south. Izuku strongly states that he must save Katsuki because that's all he can think about. Since the group can't seem to come to an agreement, Tenya decides to join them. 
Momo asks Tenya what his reason for joining them is and he replies that he's unconvinced the boys will behave themselves. If there is even a hint of potential combat, Tenya will force them all to retreat immediately. Shoto calls him "Watchman Iida" and Momo agrees her role on the team will be similar. They all board a train for Kamino Ward in Yokohama City. Izuku asks if the class knows about their mission and Shoto reveals that they all disapprove. Shoto makes it clear that they're acting against the wishes of their classmates and asks everyone if they're committed anyway. Eijiro says that he is and Izuku agrees they can't turn back.
The group arrives in Kawagane Prefecture and Eijiro rushes to find the villains. Momo calms him down and reminds the group that the villains know what they look like. She suggests that they all buy disguises and so they do. Shoto wears a purple dress suit with a gold chain and a wig that covers his scar. They exit the store and Shoto asks why Momo couldn't use her Quirk to make the disguises instead. Momo replies she doesn't want to ruin the economy and Eijiro figures the rich girl just wanted to go shopping.
Momo begins to lead them to the target area but they notice a press conference being broadcasted featuring Nezu, Eraser Head, and Vlad King. They notice the crowd around them beginning to turn on not only U.A. but hero society as a whole. Momo eventually leads them to the spot her receiver is showing. Although the villain hasn't left this hideout in the past day, this doesn't mean Katsuki is there. Izuku starts muttering over a plan to infiltrate the building.
During their planning, the group is approached by a few drunk men trying to hit on Momo. Shoto suggests they move to a less populated area. They decide to approach the building from the rear and travel through a narrow alleyway. Shoto and Tenya prop Eijiro and Izuku on their shoulders so they can look into the building with night vision goggles. Eijiro suddenly gets scared and Shoto asks if the villains saw him. Eijiro passes the goggles to Izuku, who reveals that inside the hideout is a Nomu factory. The students are shocked when they notice Mt. Lady and other Pro Heroes breaking into the hideout. Mt. Lady stomps on the building and the shockwave from the impact knocks Shoto's wig off his head. 
The students recover and look back into the building to see Best Jeanist, Mt. Lady, Tiger, and Gang Orca have subdued all the Nomu. Since the heroes appear to have the situation under control, Shoto and company decide to leave. The situation gets completely turned on its head however when All For One arrives and attacks the Pro Heroes. His very presence strikes the students with fear. They desperately hold their breath and hide behind the broken wall, fearing death from the League of Villain's true leader. 
All For One effortlessly defeats all the Pro Heroes and warps Katsuki to his location. The other members of the League of Villains are warped there as well. Izuku prepares to make a move, but Tenya grabs him and Shoto to stop them from getting noticed by the villains. All For One appears to notice them, but it was the arrival of All Might that he noticed. 
All Might and All For One begin their duel. Tomura and the League of Villains are ordered to escape through Kurogiri's Warp-Gate after they recapture Katsuki. The villains surround him and Katsuki fights back to avoid capture. Izuku comes up with a plan to rescue Katsuki without fighting and the others agree to it. Katsuki knows All Might can't go all out against All For One because his student is nearby. This is causing Katsuki to keep his distance from the villains which will give the students an opening to rescue him.
Izuku, Tenya, and Eijiro use their Quirks to break through the wall. Shoto creates a giant ice ramp for them to scale so that they'll be high above the battlefield. All Might keeps All For One from interfering and Eijiro calls out to Katsuki because they're friends. Katsuki listens and uses a large explosion to propel himself into the air and then uses another one to reach Eijiro, successfully completing the rescue mission. 
Shoto tells Momo the villain's attention is on the others. They use the opening to escape and leave the alleyway together.  They successfully escape and Shoto calls Izuku on the phone. He informs Izuku that they're back on one of Kamino's main streets and confirms that Izuku and the others got away with Katsuki. Shoto and Momo move to regroup with them and they hear the loud cheers for All Might during the climax of his battle with All For One. 
After All Might defeats All For One and the Kamino Incident concludes, Shoto and Momo regroup with the others and take Katsuki to the police. Less than half a day later they all go their separate ways. Shoto reads the news about All Might's retirement on his phone as he heads home. Fuyumi welcomes him home and tells him that she was worried. Shoto apologizes and then she tells him that their father is going crazy inside his training room.
Shoto goes to see for himself, realizing that Endeavor is the No. 1 hero now that All Might can't fight anymore. Shoto peeks into the training room to see his father lamenting the events that transpired. As Shoto looks on, Endeavor lights more than half the room on fire and he says he refuses to accept becoming No. 1 this way.
All of Class 1-A gets permission from their guardians to move on campus into U.A. High's Heights Alliance dormitory. On the day everyone moves in, Shota tells his students they will resume training to get their Provisional Hero Licenses. He also tells the entire class that Shoto, Momo, Izuku, Eijiro, and Tenya went to save Katsuki from the villains. Everyone in the class would have been expelled as a result of this if it weren't for All Might's retirement.
The students get a tour of their new living quarters and are given the day to move in. The girls in the class decide to hold a room presentation contest called the "Room King". Many of the of Shoto's fellow boys are embarrassed by their presentation, but Shoto remains aloof and expresses how tired he is. Mezo's room appears to be completely empty and Shoto tells Mezo he never realized his friend was a minimalist.
When the class reaches Shoto's room he's quick to open his door because he's tired and wants to get it over with. Much to everyone's surprise, Shoto has a Japanese style room that looks very different from everyone else's choice in style. He explains that he has tatami flooring at home so he can't relax without having it in his living space. Denki and Minoru ask how Shoto managed to do such an intense remodel in just one day. Shoto surprises everyone again by simply replying that he worked hard.
After the contest ends, Shoto asks if he can finally go to bed. Tenya tells him to make sure he brushes his teeth and then he walks off. Ochaco stops Shoto and brings him outside along with Tenya, Izuku, Momo, and Eijiro. Tsuyu waits for them outside the building and tells them that the trust between the class has been shaken because of all of their actions during the Kamino Incident. She explains that she thought she had stopped her peers from attempting to break the rules back at the hospital and was shocked to learn from their teacher that her friends had forgone her warning.
Ochaco explains that many students in the class feel uneasy about what happened and used the Room King competition to have fun. Shoto and everyone else apologizes to Tsu for making her sad and they all resolve to bring Class 1-A closer again. In the days remaining before the upcoming Provisional Hero License Exam, Class 1-A must train to hone their own Super Moves. Ectoplasm, Midnight, and Cementoss take the students to Gym Gamma to continue their Quirk training so they can develop their own special techniques to use in the licensing exam. 
Shoto hones his skills during Super Move Training by practicing the simultaneous release of the left and right sides of his Quirk.  He also upgrades his costume with improved snow boots and two new wrist guards made to help him regulate the temperatures of his Quirk. Class 1-A trains for ten days until the day of the provisional licensing exam arrives.
Class 1-A arrives at National Dagobah Stadium and Eijiro tries to start a Plus Ultra chant after Shota's words of encouragement. A familiar Shiketsu student crashes the chant and yells Plus Ultra himself. Shoto notices him right away but doesn't fully recognize him. After Inasa leaves, Shota reveals to the class that he was the top student among those admitted with recommendations. Izuku is surprised to hear that Inasa's skills are supposedly above Shoto's.
Ms. Joke's class from Ketsubutsu Academy High School greets Class 1-A as well. Tatami Nakagame compliments Shoto on looking cool at the sports festival and asks for his autograph. Shota tells his students to change into their costumes and head to orientation. Yokumiru Mera explains the rules of the first phase of the exam to the thousands of students in attendance. Students must eliminate two people by hitting their targets with orange projectiles in order to move on to the second phase. Shoto is surprised when the orientation room opens up and the entire arena is exposed.
Each class of students moves as a group to different areas of the arena. Izuku suggests Class 1-A stick together because all of their Quirks were exposed during the sports festival. However, Shoto is uncomfortable using his Quirk in a big group and decides to go off on his own.  Shoto goes to the factory-like district of the arena and feels tremors set off by Ketsubutsu Academy's Yo Shindo. He hides by himself and tries to wait it out until he can take advantage of big teams fighting one another. However, the exam has been moving quickly and over half of the remaining slots have been filled by students who've already passed.
Shoto realizes he can't just wait around and moves from his hiding spot. He's immediately confronted by ten students from Seijin High School. The ninja-clad students are impressed by Shoto's reaction as the U.A. standout scorches their first projectile. They call him crazy for acting alone and ambush him with a barrage using the orange balls. Shoto protects himself with an ice shield and then effortlessly freezes his opponents in place.
The leader of the pack uses a Quirk that enlarges objects and throws a giant metal nut at Shoto. The U.A. student blocks it with his ice defense but it crumbles under the weight of many enlarged nuts, bolts, and nails. Shoto decides not to go all out in case there are other people nearby. He tries to melt a giant incoming projectile using his fire, but he's forced to dodge at the last moment.
The lead Seijin student explains his tools are made from a material resistant to extreme temperatures. He frees his fellow students from the ice and tells Shoto that acting alone shows that he's too overconfident.  Shoto attacks with his flames but two of the students counter using their water Quirks. The students break through Shoto's ice defenses using physical objects. He flees the area after creating a smoke screen and surmises that the Hero Public Safety Commission designed the many areas of the arena to be used to the student's advantage.
Shoto pierces an oil tank using his ice and leads his opponents into a trap using a fake fire signal. He defeats the Seijin students by detonating the tank by blasting its puncture with his fire. Shoto freezes them all in place before eliminating two of them to pass the first phase of the exam. He walks away and thinks about practicing using both sides of his Quirk because it slows him down. The targets on his body light up and tell him to head to the anteroom until the first phase concludes.
Shoto arrives in the anteroom and sits down before meeting Inasa's cold glare from across the room. He wonders why he didn't meet Inasa at the entrance exams since he applied through recommendations.  Momo, Tsuyu, Mezo, and Kyoka arrive in the anteroom just as Shoto begins to worry about his classmates. He asks how they got separated if they were all working together and Momo explains the tremors from earlier were used to split Class 1-A up.  Izuku, Hanta, Ochaco, Katsuki, Denki, and Eijiro join them, later on, to make 11 members off Class 1-A that have passed. The remaining students make an inspirational comeback in the climax of the first test to take the last nine spots for the first phase. 
During the intermission between phases, Shiketsu students confront Katsuki to apologize for Seiji Shishikura's behavior. They wish to maintain a good relationship with U.A. but Shoto questions that because of Inasa's earlier glare. He confronts Inasa and the first year Shiketsu students reveal that he hates both Endeavor and his son. He says that Shoto has changed since the entrance exams, but his eyes are still the same as his fathers. 
For the second and final phase of the licensing exam, students are tasked with conducting rescue operations. The arena is destroyed to simulate a villain attack and students are scored based on rescue tactics. Class 1-A sticks together initially, but Shoto goes with Tsuyu and Toru to rescue civilians from H.U.C. by the river. Shoto's group takes notice when the test reaches its climatic point when Gang Orca and his group of villains invades the arena. Students must now juggle rescue operations on top of suppressing the villainous threat.
Tsuyu says that although there are still many more people to rescue, their group can't simply ignore the villains attacking the rescue station. Shoto rushes to the front lines and keeps Gang Orca away from the rescue station using a freezing attack. This gives his peers an opening to evacuate injured civilians away from the villain attack. Shoto freezes Gang Orca's sidekicks and keeps up an ice barrage that the makeshift villain counters using ultrasonic waves. He commends the No. 10 hero's ability and then notices Inasa arriving on the battlefield and attacking using his wind.
Shoto is annoyed by Inasa's presence because he sees him as a distraction. He tells his archrival to help with the rescue efforts instead. Inasa refuses and tries to blow away the villains with a whirlwind at the same time as Shoto's flame blast. They cause each other to miss and this sparks an argument between them. Inasa claims the son of Endeavor is trying to hog the glory just like his father would. This irritates Shoto and he leaves himself open to getting shot by one of the sidekick's cement guns while trying to argue his father has nothing to do with him.
Inasa says that he knew Shoto was Endeavor's son at the entrance exam because they both have the same cold, angry, and hate-filled eyes. Shoto refutes this and writes Inasa off as an Endeavor hater. He tries to focus and foolishly uses his flames at the same time as Inasa's wind again. Only this time they endanger Yo Shindo, who is injured nearby. Izuku pulls Yo away from the flames and yells at Shoto to think about his reckless actions. 
Shoto finally recalls Inasa from the entrance exam and realizes he never really looked at him during that time. Shoto's bad attitude was a result of him trying to reject his father and now his negative actions are catching up with him. Shoto realizes this situation is a chain reaction from his past actions and knows he can no longer try to bury his feelings about his father. Gang Orca approaches Shoto to distract Inasa before blasting him with hypersonic waves. Shoto tries to help but the villain grabs him by the neck and reminds him that you reap what you sew before blasting him with more hypersonic waves.
Gang Orca drops Shoto's paralyzed body to the ground as the student mulls over his mistakes and decides he has to make up for them. Shoto and Inasa both know that as long as they remain incompatible that they'll never defeat a top Pro Hero. The former hopes that the latter feels the same as him and ignites his flames so that Inasa's wind can scoop them up. Shoto adds the heat from his fire to Inasa's whirlwind to create a spiraling flame prison that traps Gang Orca. 
Gang Orca's sidekicks try to shoot Shoto to stop his flames from drying their Captain out. Shoto creates ice to block himself by managing to dual-wield both his elements since his body can't move regardless.
Gang Orca admits the duo managed to pull out an impressive unison move but he adds that they need to have a backup plan for when a villain doesn't concede. He uses a water bottle to rehydrate himself and then breaks out of the hot wind prison. Shoto and Inasa are on the edge of defeat but Izuku comes to their rescue before Gang Orca finishes them off. Shoto comments that Izuku is always there to help and then the test suddenly ends. 
Students change back into their uniforms and gather around Yokumiru Mera. He presents a list of names of the students who passed the exam and explains students were graded on a demerit system based on scoring how few mistakes were made.
Shoto doesn't find his name on the list and isn't surprised to learn that he failed the exam. Inasa approaches Shoto and apologizes for being petty and causing him to fail. Shoto replies that his failure was a result of his own actions. His peers are shocked to learn he wasn't able to gain a provisional license. Minoru claims the hierarchy of Class 1-A is collapsing and Tenya gets him away from Shoto.
Yokumiru addresses the students who failed the exam and reveals there is a three-month remedial course for them to take in order to get their licenses. Shoto is pleasantly surprised by this revelation and tells his friends that he will catch up with them soon. 
Summer break ends and U.A. students attend the orientation for the second term. One their way to orientation, Class 1-A gets heckled by Neito Monoma. Neito reveals that all of Class 1-B passed the exam. Shoto was one of the two people to fail. Ashamed, Shoto apologizes to his classmates and Eijiro assures him it's not a competition. Principal Nezu leads orientation and mentions Hero Work-Studies during his speech. This gains Shoto's interest because he's unsure what the Principal is talking about. 
Aizawa explains the Hero Work-Studies the first homeroom class. He introduces Class 1-A to The Big 3 so they can explain how the Work-Studies differ from the Hero Internships. Nejire Hado gets easily distracted and asks Shoto about his scar. He doesn't even get to answer before she moves on to asking other students random questions about themselves. Mirio Togata goes last and suggests that Class 1-A fight him to get the best idea about the program.
Shoto sits out of the fight and watches Mirio annihilate his classmates one after another. Aizawa comments that Mirio is closer to being the No. 1 Hero than even Shoto's father.  Shoto is shocked that Mirio is stronger than Pro Heroes and Aizawa asks why he's not fighting. Shoto says he failed to get his hero license and Aizawa is surprised by how much Shoto's attitude has changed.
Mirio defeats all of Class 1-A (save for Shoto and Katsuki) and explains that experience made him powerful. The experience he gained from the Hero Work-Studies transformed him from a failure into U.A.'s top student. Shoto's classmates are inspired by the speech but he realizes that he's going to fall behind everyone.
Shoto and Katsuki attend provisional license training that weekend. The training is physical enough to give Shoto and Katsuki injuries to showcase to their peers the next class. The girls are heartbroken that Shoto's pretty-boy face has been ruined. 
During lunch a few days later, Shoto and Tenya notice Izuku is stressed out from his new job. Tenya reminds Izuku that he can always talk to his friends and the latter tears up. Izuku wipes away his tears and claims heroes don't cry. Shoto argues the opposite and offers his friend some of his soba. 
Izuku, Eijiro, Tsuyu, and Ochaco are involved in a villain incident on their jobs with different hero offices. Shoto and the others greet them at Heights Alliance when they all return from the hospital. He gets a reminder on his phone and apologizes to his classmates before going to bed. Shoto and Katsuki both go to bed early because they have provisional license training in the morning. 
Shoto and Katsuki leave for training first thing in the morning. They're greeted by All Might and Present Mic who claim they're late. Endeavor messaged his son the night before to announce that he'll be at the training. Shoto hopes that his father doesn't run into All Might. Inasa and Camie arrive at the training facility at the same time and Shoto isn't exactly happy to see them. Gang Orca and Yokumiru confront the remedial course group to tell them it's time to step it up. 
The students change into their hero costume and walk toward the main gym. Inasa walks with Shoto and asks him about his favorite food. Shoto likes cold soba but Inasa likes the warm kind. Inasa tries to seek out similarities between them but Shoto believes it would be best not to force themselves to be friends. All eleven students arrive in the gymnasium and Endeavor yells at Shoto from the stands that he doesn't belong in a remedial course.
Gang Orca confronts the students and belittles them for failing the original licensing exam. He yells at Shoto and questions how he could ever save people. Shoto gives a literal response and then the No. 10 hero comically knocks him across the room. Gang Orca says Shoto, Katsuki, and Inasa are plenty strong in a fight but they all lack the true heart of a hero. Heroes must always save others even when they're being rejected. The students are assigned a trial where they must save troubled children using their hearts.
Children with powerful Quirks from Masegaki Primary School fill the gym. Some of the students grab the capsules on Shoto's belt and call them "pee-pees", giving Shoto the nickname "Five pee pee man". Shoto tries to explain they're for first aid treatment but the kids find that boring and jump on him.
Katsuki gets his Grenadier Bracers stolen by the kids and Shoto worries they're too dangerous to be in children's hands. Shoto surmises that his team needs to be sensitive to the children to try and win them over. Katsuki tries to intimidate the children's leader to make them fall in line but that backfires. Inasa tries to be kind to the children but they just make fun of him. Shoto tries to tell the students what kind of person he is so they'll listen to him, but they just find him boring. He apologizes and Inasa tells him that it's okay because he tried his best.
Camie suggests that they try to win the kids over by showing off their Quirks. The children activate their Quirks in response and announce that they believe their generation is stronger than the previous one. Katsuki leads the team and tells the troubled brats to bring it on. Remedial Course Arc The kids attack using their potent Quirks. The team simply endures their attacks before repelling them. Katsuki is surprised kids would attack unprovoked and Shoto replies that they likely believe the Hero prospects don't mind what is done to them.
The students are surprised that the heroes in training aren't afraid of their Quirks. They get aggressive again but Camie creates an illusion of Shoto to calm the little girls down. Katsuki finds the illusion hilarious but Shoto doesn't see what is so funny about it. Inasa follows up by lifting kids into the air with his Quirk and then Shoto works together with him to create a beautiful slide made of ice. Shoto says he used all their splendid Quirks as a template to make the slide because he can't form special shapes with his ice. The kids are taken back and amazed by what the heroes in training can do with their Quirks. He tells them to line up so Inasa can lift them to the top of the slide.
Shoto, Inasa, and Katsuki planned to win over the kids by using their Quirks to make them look cool. However, they understood they shouldn't make the students feel bad by defeating them, instead, they should try to broaden their perspectives. By deepening their interactions without breaking the children's spirits, the heroes in training win the students over. Inasa even promises to build a rollercoaster but Shoto doesn't believe it to be possible. Shoto warms up the children using his fire and smiles as his father and All Might look on and comment that Quirks were made to help others. Remedial Course Arc
Having accomplished their mission, the heroes in training clean up the gym with the kids. One of them asks Shoto if his Binging Ball Quirk can be used to clean up the ice. Shoto encourages him to use his Quirk to rescue others in the future. The team bids farewell to the precious brats and officially pass the provisional training course. They change back into their student uniforms and exit the gym. Inasa says that his Quirk is actually very compatible with Shoto's and the latter agrees.
Endeavor approaches Shoto outside and says it's been a long time since they last saw each other. He reaches out to his son and says he's changed a lot but Shoto smacks his hand away. Despite Shoto's rejection, Endeavor says he's proud of his son and he wants to become a hero his son can be proud of as well. Shoto awkwardly tells Endeavor to do what he wants. Endeavor leaves and Shoto looks on with a smile. Remedial Course Arc
U.A.'s School Festival approaches and Class 1-A gets instructed to prepare any kind of themed spectacle to be presented. The class tries to vote on one theme but isn't even able to narrow down a long list of possible presentations. The students talk about it again later at the dorms. Tenya decides the class should focus on something that helps the crowd enjoy themselves.
Shoto agrees with Mina that they should try to get the crowd to dance and have fun. He looks up a video of a musical performance and suggests the class emulate that. Everyone can't believe this party style idea came from their aloof classmate. Shoto credits his idea to his experience with the provisional licensing training. The class decides on a musical performance for the festival. 
Class 1-A starts planning for the festival one month in advance. Jiro is put front and center and the class wants Katsuki to back her up on the drums. He refuses because students from other departments don't deserve to be pleased. Shoto tells him not to belittle the class if he refuses to participate. Katsuki reveals that he'll participate by killing the other classes with his sound. 
Mina explains to Shoto and the others that they need staging to create an entertaining atmosphere. She plans to create snowflakes by having Eijiro use his hardened body to chip away at Shoto's ice. They're assigned to the staging team with Hanta, Koji, and Yuga.  The staging team practices their set and the entire class performs on the day of the festival 
Following Endeavor's rise in rank to the No. 1 Hero, he's attacked by an intelligent Nomu called High-End. The incident is broadcasted on television as the powerful monster destroys the city. Endeavor and Hawks fight it back, but it counters all of the No 1. Hero's flame moves. High-End manages to injure Endeavor's head and knocks him down. Seemingly defeated, Endeavor lies beneath the beast as Shoto watches in shock. 
Endeavor gets back up and continues fighting. Shoto's classmates and Aizawa check up on him while he watches his father lose ground in the battle. He's surprised to hear as a citizen stands up for Endeavor to the media. He tells the reporters to raise up Endeavor as the hero who's giving his all for them. 
Endeavor makes a last stand against the violent monster and Shoto passionately yells that he's watching his father. He watches nervously as Endeavor burns High-End to death with a Plus Ultra Prominence Burn. Endeavor stands up victorious and Shoto collapses to his knees, relieved his father is still alive. .
Shoto's worries quickly return when Dabi appears and surrounds Endeavor and Hawks with blue flames. Shoto recognizes Dabi from the training camp attack. Dabi confronts Endeavor but retreats after Mirko arrives. 
Shoto gets permission to leave school grounds and returns home. He reunites with his siblings Fuyumi and Natsuo over lunch. Their father enters the house and Shoto makes a clever remark about his new scar. Fuyumi's upset that neither of her brothers greets him properly. Natsuo storms out after claiming that their dad will never change and he doesn't deserve forgiveness.
Shoto says he's never seen Natsuo so emotional. The three of them listen to the television broadcast the public opinion on Endeavor. Shoto says Endeavor the Hero is amazing, but he still hasn't forgiven his father. He's willing to see how his father can change because Shoto knows how one influence can change someone..
Class 1-A and Class 1-B engage in their first joint training exercise together. Everyone changes into their hero costumes and meets at ground beta. Eraser Head and Vlad King explain that Class 1-A and Class 1-B will battle over five sets with randomized teams of four. The teams are to treat each other as villains and can attain victory by capturing four of the opposing team's members. Hitoshi Shinso joins the exercise and some students compare his attitude to "Earlyroki".
The students draw lots and Shoto is on a team with Tenya, Mezo, and Mashirao. They're to face off with a team comprised of Tetsutetsu, Juzo, Sen, and Pony.  Shoto watches his classmates win the first match and Momo's battle with Class 1-B.
Itsuka Kendo manages to corner Momo alone and Tetsutetsu claims she made the situation advantageous for herself. Shoto argues that getting Momo alone probably wasn't the best course of action. Shoto says if Itsuka was trying to be cautious about Momo, then she should have had her team ambush her together. Momo's team is eventually defeated and Shoto hopes her confidence isn't dashed by the loss. 
Shoto's team is up next for the third battle. Fumikage confronts Shoto and asks him to represent their mentors better than he did in the previous fight. They must represent the No. 1 and No. 2 hero who fought valiantly against High-End. This reminds Shoto of a time during his childhood where Endeavor tried to teach him to use his fire at its full power. Tenya breaks Shoto out of his flashback and the match begins. Class 1-B comes charging straight for them and Shoto comments that they must want to turn this battle into a head to head slugfest. 
Shoto's team splits up and Mezo gets their enemies location. Shoto freezes the area with a giant ice attack that doesn't impede his team's vision which shows improvement. Tenya goes in to arrest the enemy but Juzo counterattacks by softening all the ice with his Quirk. He tells Shoto that he should've attacked with his flames instead. Pony uses her horns to send Mezo away and isolate Shoto. Her horns boost Tetsutetsu through Shoto's ice and the iron fighter takes him on alone. Tetsutetsu takes Shoto and throws him to the ground while telling him he stands no chance in a hand to hand fight. 
Shoto tries to fight back with an ice wave but Tetsutetsu breaks through it with his iron fist. Shoto recovers and tries a wall of flames instead. He tells Mezo to go after Pony and hopes Tetsutetsu retreats. Tetsutetsu walks through the flames and reveals that half-cold half-hot won't work on his iron body. Tetsutetsu grabs Shoto and hits him, planning to beat him unconscious. Memories of Enji training Shoto as a child fill Shoto's head. Enji told Shoto that within him is the greatest power in the world. Shoto raises his hand to protects himself and prepares to go beyond. 
Since his attacks haven't worked thus far, Shoto turns up the heat and draws out the full potential of his flames. Tetsutetsu backs off as Shoto warns him to or else he'll melt. Shoto burns through his limits to achieve his dreams of becoming a great hero. He stands before Tetsutetsu clad in flames powerful enough to set the entire training field ablaze.
Tetsutetsu doesn't back down from Shoto's Endeavor level flames. He engages in a battle of endurance and Shoto warns him of the possible repercussions. Tetsutetsu claims heroes must be ready to put their lives on the line and Shoto replies he's too loud. The flames are so hot that it's raising Shoto's body temperature and makes him dizzy. He needs to get some distance so he can cool himself with ice
Shoto prepares to counterattack but Juzo interrupts and sinks Shoto into the ground. A softened pipe lands on Shoto's head and he falls unconscious. Tenya saves him from being captured but their both caught in a last ditch effort from Tetsutetsu and Juzo.  The match ends in a draw and Shoto is taken to the infirmary. He abruptly wakes up next to Tenya.
Tetsutetsu is leaving the room and he commends Shoto's flames for defeating him. Tenya apologizes for not being fast enough to save Shoto. Shoto vaguely remembers Tenya saving him and argues that he was the one that was too slow. Shoto knows that he's gotten into a bad habit of favoring his ice and has become predictable. He remembers watching All Might and says he needs to become a more reliable hero.
Juzo opens the curtain next to them and admits that flames and recipro are hard for him to deal with. He asks for a rematch sometime and the two boys from Class 1-A agree.
At the dorms, Shoto approaches Izuku, stating he was looking for him and asks if he also has two Quirks and if he was still hiding his power when he asked Shoto to come at him with all he had, to which Izuku hurriedly replies that the black tendrils might be an extension of his original Quirk, and he wasn't holding back against him. Shoto believes his explanation and Izuku compliments Shoto on how much flame he was able to generate in the battle, but Shoto denies this, saying that he hasn't changed at all compared to Izuku. It is revealed that he requested that his father, Endeavor, teach him about one of his fire moves “Flashfire”.
During the early morning of December, Shoto and Katsuki left for the final lesson of the provisional license course. He is seen eager to obtain his license when Gang Orca and his sidekicks prepare to carry out the final lesson for those present, stating that if they succeed.
Eventually, they pass the exams and obtain their licenses. While out on the streets with All Might , chaos breaks out in the city because of villains stealing from the public. Shoto and Katsuki were eager to intervene, while All Might tells them to analyze the situation before leaping into action. The students tell him they can handle it. All Might tries to dissuade them since they’ve only just earned their provisional licenses, but they pay no heed and attack the villains nonetheless, making use of their new privileges.
Shoto opens with his signature Giant Ice Wall attack, but the Seltzer Villain can manipulate carbonation inside water. The villains break out of the icy prison but Katsuki acts quickly and knocks most of them out. The leader nearly turns the tables on Katsuki with water gauntlets. Before things spiral out of control, Shoto puts down the criminal with his Ultimate Move: Flashfreeze Heatwave!
Katsuki asks if that's the same move he used against Izuku in the Sports Festival and Shoto confirms it was a watered down version. All Might returns to the scene with Pro Hero Slide n' Go. They're impressed with the results, as the boys defeated the villains and took back the stolen items. All Might tells his young champions that he's proud of them, garnering warm gratitude from Shoto.