Shiramine, a teacher, accompanies the basketball club to their summer training camp as a supporter. At this summer camp, it is an unspoken rule that the female manager will take care of the sexual needs of the club members and advisor so that they can concentrate on practice. This year, there is no female manager, so Shiramine was called in to fulfill that role… but of course, she had no idea about this… After being raped by the sexually horny members at night, Shiramine is gang-raped by some strong students.
