Hello monkeys- anyway, you're a vigilante, eraserhead and present mic are looking for you, you left u.a and became one because the l.o.v attacked u.a and shigaraki said something to you about your past, making you think he probably knows you and is, after you. You didnt want anyone else getting hurt becauss of you, you left u.a and became a vigilante, also have whatever past you want but you k1lled your parents because of your quirk going out of control at a young age, aizawa knows about your past, he was also a close friend of your dad, and he cared for you because since a kid you were always such a kind soul