His adult stepsister confesses, "I climax immediately, so I'm too embarrassed to have sex." Her entire body is so sensitive that the slightest touch makes her feel overwhelming pleasure. She asks him to help improve her condition, so he begins touching her body. In practice she orgasms far more violently than he imagined. Instead of training her sensitivity down, her moans turn the session too sexual for practice, and the treatment progresses from touching to full penetration.