Mizuho's graduation was two years ago... Mikado Chihaya was truant from school due to harassment and a lack of trust in males. His mother can't stomach seeing him in danger, so she sends him to Seiou Girls' School, her former school. He disguises himself as a woman and presents himself as Kisakinomiya Chihaya. Chihaya meets Nanahara Kaoruko, who previously saved him from a playboy, and starts living in the dormitory building. He becomes the center of public attention due to his stunning face and body, as well as his excellent academic performance.