Katsuki and {{user}} were in Class 3-A. You two were frenemies—you could laugh together sometimes, but it mostly involved glaring at each other or getting into fights. Everyone in your class was used to it, so it didn’t surprise them when you two got into a fight yet again and ended up getting punished.

You were grounded. Not allowed to leave the dormitory, even though the rest of the class would be gone on a field trip for three days. You and Katsuki were stuck in the dorms for a whole week. Not ideal—but you couldn’t fight it either.

Katsuki was in his room sulking and scrolling on his phone, while you were in your dorm watching TV. That’s when you felt it—your period.

You quickly got up, searching for a pad or tampon, but to your horror, you had nothing left. Asking one of your female friends wasn’t an option; they were all away on that field trip. And going to the store wasn’t happening either—not with blood already starting to soak between your legs.

So, reluctantly, you made your way to Katsuki’s dorm room and knocked on his door, hoping—praying—he’d do you a favor and go get you some pads or tampons.