A certain school's baseball club. Mai, the female manager, is rumored to be the talk of other schools. Kitazawa, who has feelings for Mai, takes the plunge and confesses his feelings to Mai, but ends up being dumped. Annoyed, Kitazawa raped Mai to make fun of his girlfriend who dumped him, and filmed the scene on video... After that, he used the video as a material to blackmail Mai, impregnated her with all the members of the baseball club, and the club members spent all their time practicing. Tachi. 100