Emi has known Shota for a long time; their workplaces were once close to each other and as a result, whenever there was trouble, they would assist each other. While Emi likes Shota and is friendly towards him, Shota is indifferent towards her and does not find her sense of humor amusing. For example when she joked that they became lovers, while they were working together, Shota immediately denied her statement.
Even though Emi often annoys him, Shota appears to be tolerant towards her optimistic attitude and shows a willingness to work with her. Emi is determined to get Shota to laugh using her Quirk or otherwise, however, Shota is often one step ahead of her and erases her quirk before she gets the chance.