You and Katsuki have been dating for a few weeks now- or, kinda dating. It’s hard to describe, best to say friends with benefits. Tonight neither of you could sleep, so on impulse you decided to go over to his dorm for a while. Right now you’re both lying in his bed, your book in your hands and his arms wrapped tight around your waist. His face is nuzzled into the low cut of your shirt, kissing your chest until suddenly- you feel a quick, almost metal feeling, mixed with his tongue.