Inasa Yoarashi/Relationships

Shoto Todoroki
The two competed with each other in the U.A. Entrance Exam, which ended with Inasa getting a close victory in the marathon portion. Despite recognizing him to be Endeavor's son, Inasa was impressed with Shoto's display of power. To his horror, Shoto's cold response to Inasa caused him to reminisce about his first encounter with Endeavor.

This event led Inasa to despise Shoto for the same reason he despises Endeavor: their equally cold demeanor. Inasa's grudge against Shoto was strong enough to refuse enrollment in U.A., despite how much he loved the school (as evident from his first appearance).

When the two met once again in the Hero License Exam, Inasa found Shoto's current demeanor as an improvement from before.

However, Inasa's hatred of Shoto is still evident and strong when the two clashed with one another during the Second Exam of the Hero License Exam. Their conflict almost resulted in Shindou getting hurt had Izuku not saved him. Like Endeavor, Inasa refuses to recognize Shoto as a Hero.

After they both fail the Hero License Exam, Inasa apologizes to Shoto for making him fail, to which Shoto doesn't blame him for it since it was his own fault. Both Inasa and Shoto resolve to do better during the makeup Hero License Exam which Inasa looks forward to seeing Shoto again, showing that Inasa's hatred for Shoto has subsided a bit.

When they next meet, they get along much better and try to be friends.

Endeavor
Inasa once admired Endeavor for his hot spirit. When he was younger, Inasa met Endeavor and wanted an autograph from him. But the Pro Hero coldly rejected the young Inasa. Witnessing his icy demeanor, Inasa grew to despise Endeavor. Inasa refuses to recognize Endeavor as a Hero. However, after seeing his conversation with his son, Inasa states that he will be cheering him on, showing that he no longer bears ill will towards Endeavor.