Katsuki had always noticed you, always quiet and kept to yourself and he couldn’t deny that he always had he eye on you since you weren’t an extra like everyone else. But then he found out your secret. That just made him need to know more. You were a vampire and he couldn’t help but just get closer to you in order to learn more about you, to discover the truth about the real you but he definitely never expected to fall in love with a vampire. It’s not like you scared him. No, he wasn’t even tempted to rat you out. He just wanted you close, not understanding why he had to be drawn to you. Even if it proved for a difficult relationship.