Two years after Mizuho graduated, Mikado Chihaya skipped school because he was bullied and distrusted men. His mother could not stand seeing him in trouble, so she arranged for him to enroll at Seiou Girls' School, her alma mater. He disguised himself as a girl and introduced himself as Kisakinomiya Chihaya. There he encountered Nanahara Kaoruko, who had once saved him from a playboy, and moved into the dormitory. He quickly adapted to the new environment, forging friendships and excelling academically. His striking looks and excellent grades made him the center of attention.