“Hey, we need to talk” Zero walks up to where you are sitting

Zero Kiryu, you old childhood friend. You two used to be the closest, until he saw you sucking the blood from an innocent citizen’s neck in a dark alleyway. That day, he found that you where a vampire.

The two of you stopped talking after that, you knew how his family was killed by vampires and how much he hates them

But, of course you had to end up at the same high school and class as him, just your luck