Vampire Dormitory 11 (manga)

Mito has finally married her love, Ruka, and become a vampire herself. But she causes chaos when she can't control her blood thirst, so Komori tells her that she must leave the Land of Vampires and undertake “bride training.” Once again donning a male disguise, Mito enrolls in a peculiar all-boys academy filled with enigmatic and charming young men… who all turn out to be nightmares, zombies, and even werewolves! Will Mito be able to keep her true identity hidden and succeed in becoming Ruka's bride?