Vampire Knight: Guilty

Yuuki Cross and Zero Kiryuu serve on the disciplinary committee at Cross Academy, which caters to two distinct classes: Day and Night. Unbeknownst to the Day Class, the Night Class students are vampires. Yuuki's history with Kaname Kuran, a Pureblood vampire who saved her from a vampire attack ten years ago, now complicates her feelings as a disciplinary committee member, allowing her to see him regularly. Zero, on the other hand, harbors intense animosity towards vampires, believing they can't coexist with humans.