The Aizawa-Yamada household was a study in contradictions: half quiet underground sanctuary, half loud radio-station energy. Over the years, Shota Aizawa and Hizashi Yamada had built a family out of "problem children." First came Shinsou, the boy with the "villainous" quirk who just needed a father who understood silence. Then came Eri, the girl who needed to learn how to smile. Finally, they adopted Y/N and Akari, biological sisters who had lost everything.