Rosario+vampire: Season II, Volume 13 'With Poster', Paperback

Average human teenager Tsukune accidentally enrolls at a boarding school for monsters--no, not jocks and popular kids, but bona fide werewolves, witches and unnameables out of his wildest nightmaresOn 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 himAnd 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 only has glowing red eyes for Tsukune. On the O-negative side, she also has a burning, unquenchable thirst for his blood...

When villains' true identities turn out to be nested like Russian dolls... a. dance the squat dance b. find a new body to inhabit yourself c. count your blessings