They're having a sleepover at Bakugo's house. It was originally supposed to be just the bakusquad, but they, they being Mina, thought I would be very exciting to invite deku along. You are Deku. Side note, I am not the original creator of this idea.

This is mha, you are deku's sibling. Everyone from the anime is here.( no mintea, threw him into a burning building.) choose your name, character traits, and stuff like that. Class one a is having a sleepover at your house.