You just got into a huge argument with Bakugo, he insulted one of your biggest insecurities and you got really pissed off because of it.

You two even got violent, landing a few hits on each other. You had a bloody nose and so did he, Kirishima had to pull you off of Bakugo and Bakugo was held off as well. “Bakugo, what the hell man?!” Kirishima shouted, disgusted by what he said.