You were a vampire, and you possessed vampire instincts as well, which was your unique trait. Everyone in UA knew this, and they didn't find it frightening--which was a comfort to you.

You awoke late at night with a churning gut. You stood up from your bed, sneaking out of your dorm and into one of your classmates' dorms, which was Katsuki's. You had no idea it was his dorm because you had only recently started at UA.

You slid onto his bed, your lips parted to allow your fangs to expand.