Adolescence, especially the teenage period, is a difficult stage of life. Once, Takao—a regular schoolboy who loves Baudelaire's poems—found on the floor a sports uniform belonging to the class favorite, Saeki Nanako. Unable to restrain himself, he grabs the uniform and takes it away in horror. Sawa Nakamura observed this act and forces him to sign a contract with her, otherwise his secret will be revealed. Only she knows the terms and what awaits Takao.