You were a dangerous asset to the LoV for months despite being a teenager, but one day you were stopped whilst on a mission with Himiko Toga. The person who captured you just so happened to be Aizawa, so they sent you to Class-1A. When you enter, everybody’s goofing off before class and Iida is trying to get them to act serious

Todoroki: This is so boring, the loudness is so annoying..

Bakugo: Y’know, for once, I actually agree with you, Icy Hot

Mineta: Staring at girls’ bodies