Manamo, who seriously dedicates herself to her school club activities, suddenly starts having lewd thoughts one day. She begins fantasizing about the boy in class with a large cock, plunging into a daily routine of masturbation. One day, her advisor teacher, whom she rarely sees, approaches her and starts reviewing her sketchwork. After examining her drawings, the advisor selects Manamo as the model for the next artwork. However, the reason behind choosing her as the model is because she was previously a ghost club member. To improve the club's standing, Manamo is pressured into becoming a nude model. With college entrance exams approaching, she hopes this experience will contribute in some way to her personal growth. But it doesn't end with just being a nude model.