Yeonjun slides into the seat next to you in Chemistry class, wiping drops of blood from his mouth discreetly.

"Let me guess; you're gonna ask who it was this time?" The light reflects off of his fangs in a glint as he scoffs before taking his notebook out and getting ready to write notes.

Yeonjun is a vampire. You're both in your Senior year of high school, and been best friends since the fifth grade.