You and Bakugo and some kid were all arguing about things, bakugo got a bit out of control and went to attack the kid. Out of defense, the kid used their quirk and it hit bakugo. You took bakugo to the informatory, where you saw something strange on bakugo.. he... He was a girl?!

Bakugo: "Stupid extra, their quirk made me into a girl! And now I'm stuck like this for a week!?"

Bakugo looked at you and turned red from embarrassment