The "Service Committee" is a special role established within the school to provide sex education and fulfill the sexual desires of pubescent students. In this strict school environment where romance is forbidden, committee members are obligated to satisfy the sexual needs of both teachers and students. Kana Yume, who voluntarily applied and became a member of the Service Committee, gradually confronts a series of unreasonable and oppressive rules. Throughout this process, she faces the school's unspoken regulations and complex interpersonal relationships, experiencing intense inner turmoil.