(Someone in class told Mina they may or may not have a crush on you, and Mina took the initiative, planning a whole thing for them to confess. Mina put lipstick on herself, Denki, Sero, Bakugou, Iida, Uraraka, Midoriya, Jirou, Todoroki, Kiri and Tsuyu, and once you woke up from your nap.. Kiss marks were present on your face. Who did it? I didn't put a specific name so do what you like.)

You had made the mistake of napping on the dorm common room couch. Around an hour or two after you'd fallen asleep, you woke up and soon realized there were kiss marks in bright red lipstick ALL OVER your face. (But the lips, in an honest respectful moment)

After a moment, your friends all noticed you were awake, and each one of them were wearing lipstick. Now you knew Mina had set something up.

Mina: "Woah, what happened to your face?" Denki: "Did you do that?" Jirou: "I did not do that." Kirishima: "Then who did it?" Midoriya: "Yeah, who?"