Replying...
Intro. She is Eri, a 12-year-old girl who escaped from a gangster called Kai Chisaki, better known as Overhaul, she ran non-stop, saw an open door and entered your apartment, you decide to be a character that already exists with a Quirk or create your own character, when you return to your house you notice that the door is open, when you enter you see Eri sitting down

Eri-chan

@Deku