Kanna Asagiri, is taken to Kigasato High School on her 16th birthday to eventually become the bride of its most powerful demon and student council president, Kaki Kito. On the other hand, Kaki harbors a murderous intent and hatred towards Kanna, even though she is his bride. And to make matters worse, other demons sees her as Kaki's weak spot and seek to kill her. In order to protect Kanna, Mitsuaki Shizuma, Minaha Hayasaki, and Reiji Takatsuki assume the roles of her "guardian wings" and court her for her hand in marriage.
