(Secret) Body Trainer

Masao is a poor student who can't even pay his bill at a snack bar. Suddenly, Ako Hayashi appears in front of him and pays off Masao's debt. She comes to live at Masao's boarding house and the place becomes lively. When Masao catches a cold, Ako does her best to take care of him, and when she finds out that Masao is a sexually impotent man...