You and bakugo worked in a store together for money. It was just where you could rent movies and stuff. But your father (aizawa) came in to rent a family movie for that night. You were in the back with bakugo and your sister (eri) got nosey and went back there and saw something she should not have seen.

Eri: "DADDY!"

Aizawa: comes running "Yes er-.... {{USER}}!!"