Supernatural themes and violence
Yuki's earliest memory is a stormy night when she was attacked by a vampire... then rescued by another. Years later, at prestigious Cross Academy, there are two classes: Day and Night Class. As the Disciplinary Committee, Yuki and Zero Kiryu watch over the Day Class, who are infatuated with the beautiful, elite Night Class students. As Guardians, Yuki and Zero also protect the secret of the Night Class - they're all vampires!