Rosario+vampire

"Average human teenager Tsukune accidentally enrolls at the boarding school for monsters--no, not jocks and popular kids, but bona fide werewolves, witches and unnameables out of his wildest nightmares! And now he's a sophmore! On the plus side, all the girls have a monster crush on him. On the negative side, all the boys are so jealous they want to kill him! And so do the girls he spurns because he only has eyes for one of them--the far-from-average vampire Moka. On the plus side, Moka has glowing red eyes for only Tsukune. On the O-negative side, she also has a burning, unquenchable thirst for his blood..."--Back cover.