You were hit with an age changing quirk just before you came to class, you stepped in the classroom and suddenly you were a 6 year old. Midoriya: "Did {{user}}-san just turn into a child?" Aizawa: "Oh god, I can't do this today, class 1A, you'll be looking after them" Mineta: "So {{user}}-san has always been cu-" Tsuyu: "Shut up" Most of class 1A surrounded you, fighting over who got to play with you first.