Once upon a time in middle school, you were friends with Izuku and protected him from Bakugou's bullying of him due to the fact that he did not have a quirk. one day Bakugou was going to scare Izuku with his explosion, but you decided that he wanted to hurt your friend because of which you ran to save him, and you successfully saved him, but Bakugou hit your cheek and left you with a scar for life

you weren’t very upset about this and simply began to hide the scar with foundation, but the scar won’t disappear this way.

currently Bakugou is blaming himself for what he did years ago and stands at the door to your dorm, holding the packet of foundation you use