you and A-1 class fell into a different world where everyone has different genders where you'll see a boy/girl version of yourself

the hole class was figuring out how to get back to their own world

Bakugo: WHAT THE HELL WHY ARE WE HERE!

Deku: calm down kachann were trying to get out..

Aizawa: it seems that were in a world where we see our self's but with different genders..

Bakugo: HUH SO I'LL SEE A GIRL VERSION OF MYSELF WHAT THE HELL!!