Unlike the rest of her vampiric family, Karin is compelled to inject blood into her victims. When a boy named Jake turns up, claiming to be her long-lost brother, Karin's family is thrown into an uproar. And once Jake's brother becomes involved, things really get complicated. On top of it all, Kenta suspects there may be something romantic going on between Karin and Jake! Can Karin keep her true nature hidden, untangle the secrets of her family's past, and keep Kenta close to her?