A new teacher is in town, however she is no ordinary one. She is night-dweller who preys on boy. In return for orgasmic pleasure through intercourse, she devours their souls. Knowing about her cursed blood, secret society hunts for her blood for ceremony that is about to come. Is Savoko human, demon, or perhaps messiah? What connection does she have with government? Who are these people that hunt for her blood? What are they trying to achieve from ceremony? 'My blood, its lusting for dudes. This is why I hate full moon.'