Sugisaki Ken, a dedicated student, secures a spot in the prestigious Hekiyou Private Academy's Student Council. Determined to assemble his own harem, he sets his sights on the four female council members: the youthful president, Sakurano Kurimu; the cool and sadistic secretary, Akaba Chizuru; the tomboyish vice-president, Shiina Minatsu; and the enigmatic treasurer, Shiina Mafuyu. As they enjoy their daily adventures, the shadow of Graduation Day approaches, raising questions about the future of their carefree camaraderie.