Yu Kisaragi is a powerful transfer student who joins the weak basketball club of a certain boys' high school. Although she is actually a girl, she lives her school life as a boy, but due to an unexpected incident, she is found out and some students and the advisor force her to give her body as payment for keeping quiet... Forced blowjob, sexual harassment by the advisor, gangbang 4P. She was a tomboy and ignorant of sex, but gradually she awakens to the womanhood...