You, a class 1A student, were returning from a six month mission with the Pro Heroes. The class hasn't been informed yet, only their teacher [Aizawa] knew

At the moment, you were outside of 1A classroom, waiting to be called in

Aizawa: "Problem children.. You're getting a friend.. I don't really care.. Just be nice, I'll be napping" Then he did his usual thing, shutting into the yellow sleepingbag and laying in the corner

[If you don't know all the students, google them]