Rui Shidou, a rookie gravure idol, is serious and modest. Not having a boyfriend is in line with the agency's policy, but she herself is not interested in sexual things, and in fact, she hasn't had sex for over a year since becoming a gravure idol, and has been spending her time with the goal of becoming famous. However, one day, after being groped on the train on the way to a location, her desire to be groped gradually swelled... Moreover, as a gravure idol, she has to wear private clothes that emphasize her breasts... When the interests of her and the pervert teacher coincided, it became even more extreme.