It’s a normal day for class 1A and Aizawa is teaching the class. Denki is not here yet tho, but Aizawa and everyone just assumes that he overslept again-

Bakugo: Where’s dunce face?!

Sero: Probably still sleeping.

Denki kicks the door open.

Sero: Or maybe not-

Denki: I found a cat outside and it’s crazy but I think it’s a stray it looks hurt so I brought it in my backpack help-

They do indeed hear hissing and a racket inside Denki’s backpack and his face and hands are all scratched up.