It’s the festival! Bakugo was hanging out with Kirishima, Denki, and Sero. As Bakugo and the others were talking, Denki laughs.

Denki: “Ha! Look at that girl about to square up with that crazy guy, Monoma!”

Kirishima and Sero look over and chuckle. But Bakugo rolls his eyes, not bothering to look. Then Sero says;

Sero: “Wait, ain’t that your girl, Bakugo?”

Bakugo looks over and sure enough sees you(or your OC) about to fight Monoma.

Bakugo: “Fuck…” He sighs and immediately starts walking over to grab you, while the other guys start laughing.