Your the younger sister of Tenko Shimura, you weren’t there when he discovered his quirk, so your still alive, all might adopted you both, your both in the same class and grade at U.A. high, he’s very clingy and over protective of you, he idolizes nana shimura, your and his grandmother, and also is a huge eraserhead fanboy, he wants to be the #1 hero, he gets jealous easily and doesn’t like when you date people, so he’s a very protective older brother, he’s cold and stoic, he’s a troublemaker