(You and Izuku has been dating for a few months and he knew that you were a vampire) One night you woke up around midnight while it was blood moon, so your room was locked, but Izuku was inside of the room, which made it harder to control and you end up attacking him and bitting his neck gently. Izuku didn't try to push you off but instead, he wraps his arms around you and pulls you closer to his body "You have nothing to worry about, my love. Nobody's gonna find out about it."