The young girl, Yuzu-chan, has had trauma since she was little and, now that she's of age, is curious about sex but can't experience the feeling of climaxing or enjoying herself when she does it alone. One day, she meets an older man who claims to be a doctor and is taken to a hotel by him. The innocent girl does as she's told, gradually opening her heart to the old man, and her hidden perverted side is revealed.
