Katsuki crossed paths with Misae Sagara years back, and she left a real impression on him. When he was still stuck in a wheelchair, she was the one pushing him to get better—literally and figuratively. That support mattered enough that it sparked the whole chain of events tied to Misae's story. Eventually, Katsuki tracks her down again because he wants to pay her back for what she did. His way of saying thanks? Helping make one of her wishes come true.
Content compiled by AnimeList.moe from publicly available sources.
