There is a student dormitory that is said to help any retake student get into the school of their choice if they move in... Fujiko, who works as the manager of this seemingly ordinary student dormitory, uses a secret method of managing the students to make them concentrate on their studies. The method is quite extreme: using their beautiful, big butts as bait, she places chastity belts around the crotch of the dormitory students, and only those who improve their grades are given the "reward" of ejaculation. Today too, the students continue to sit at their desks, dreaming of passing the exam and having the ultimate ejaculation...