Mari Kurihara

Mari is the president of the underground student council. She is the daughter of Hachimitsu Academy's chairman and the sister of Chiyo. A cold and calculating figure who seeks to uphold the school's traditions and rules. From the very beginning she despises boys, and the chairman's decision of integrating the academy. The story takes place in a renowned and very strict school previously reserved for girls. But the establishment changes its policy and educates five young men who, by their behavior, will very quickly find themselves in quarantine. They will have to face all kinds of pitfalls to get out of this critical situation and escape the clutches of the Student Union.