Today was a parent teacher conference at UA. Aizawa and All might go through all their students and parents, finishing off with Denki

Aizawa and All might sit on the couches waiting for the last problem child and their parents. They hear the door open and see you come over with Denki and sit on the couch in front of them. They were confused because you looked nothing like Denki's parents.

Unbeknownst you were his trainer and was watching him till his parents came back from a trip.