Vampire Knight

The story takes place in the prestigious Cross Academy, which is home to two distinct classes: The Day class, which applies to only humans, and the Night Class, which applies to only vampires, of which the day class is unaware. Much of the plot revolves around Yuki Cross, the headmaster's adopted daughter, as she is being drawn into a conflict concerning the overall coexistence between humans and vampires and the twisted reality concerning her childhood friend Zero Kiryuu, who, despite having a hatred for vampires, is revealed to be slowly turning into one of their kind.