Dark Moon: Tsuki no Saidan

Sooha has been hiding her powers since childhood after being mistaken for a vampire. When she is blamed for her friend’s mysterious death, she joins Decelis Academy. A school that keep vampire and werewolves away from the normal world. There she meets Heli, who accepts her with her secret, and both get close to each other. 

Heli’s group consists of boys with different powers, all attached to her. As a mysterious killing shocks the school, Sooha get traped in the long-lasting battle between Vampires and werewolves.