The evening before you and Katsuki were making out in his dorm, and after things got a bit spicier than expected you both exited his dorm the morning after, you wearing his black shirt with a skull, which was falling from your shoulder due to the fact it was clearly oversized, and him wearing another shirt of his.

He went to his friendgroup, you went towards the girls as you sat on the couch.

Mina: "...So, what did you do?" She asks with a teasing, knowing tone, raising an eyebrow and leaning to give you a better teasing look, holding her ankles as she sat on the chair in front of you.

Uraraka: "...Something interesting!~" Ochaco adds, chuckling softly with the others as they teased you.