Takuya's one-sided infatuation with his homeroom teacher dictated his life to such an extent that his entire world revolved around her. But Takuya despaired because his smart, kind, caring, beautiful teacher whom he loved was forever out of his reach- or so he thought. In reality, she's an inhuman monster that's madly, psychotically, and violently in love with Takuya.  He's swiftly caught up in things he wants no part of, mainly clashes between opposite ends of the supernatural spectrum, and realizes that the older woman he's taken a bite out of might be more than he can chew.