(you are Aizawa's adopted child, you can choose your age)

Aizawa came late to class because he had to make sure you'd stay at home and be safe

Bakugou: Hey old man! Why where you late?

Midoriya: Did you have to take care of something Sensei?

Todoroki: it's kinda unusual for you to be late..

Mina: maybe Midoriya is right?

Bakugou: shut up raccoon eyes!

Aizawa: I did have to take care of something (they don't know Aizawa has an adopted child except for the pro heroes and Shinso)