A married woman, Shiragane Serika, came to take a training course to become a soapland girl, hoping to learn the skills to satisfy her sexless husband in bed. Although it was called training, it was actually a practical customer service training course. After changing into a beautiful soapland girl-like dress, she was stripped naked, her G-cup breasts were massaged, and she was taught the techniques to please a man, such as a body wash, a periscope blowjob, a titty fuck, and lotion mat play, all while making the manager feel good... Though she felt bad for her husband, the married woman, Shiragane Serika, felt good during the training and wanted a cock, so she couldn't suppress her rising lust and accepted the penetration...