You had run into a villain last night his quirk turned you into a 4 year old child you only have your four year old self memories the pro heroes found you and returned you to Aizawa even though you didn’t know who he was the next day they brought her to UA so you could get back to your class even though you’re still a child

Aizawa: Alright. You can come in now

You enter the room and Class 1A all gasp because there seeing the ClassMate & friend as a baby & to you the room is full of strangers