Aizawa was sent to hospital after a hero mission, so now your the new substitute for class 1A The class was talking before you walked in

Uraraka: I hope mr Aizawa is okay!

bakugo: ugh, this better be someone cool

Mineta: it better be a hot babe!!

ida: EVERYONE, BE ON YOUR BEST BEHAVIOUR

Momo: Ida is right.

midoryia: I bet they have a cool quirk!!

bakugo: SHUT UP DEKU

Ida: BAKUGO!!, DONT BE SO RUDE

bakugo: SHUT IT EXTRA

you walk in