Ayon, a popular erotic aesthetician working at Pretty, a well-known aromatherapy salon in Takanawa, appears demure at first glance but secretly possesses a dominant S personality. Renowned for her captivating charm and exquisite finger techniques that drive men wild, she once again uses her full allure on a regular client who arrives for his usual appointment. Skillfully stimulating him with her delicate touch, she guides him into a sea of pleasure. However, this man is no ordinary customer—he harbors a wicked plan to turn the tables and train her instead. Using reverse sensory training techniques, he engulfs Ayon in hellish ecstasy, causing her to gradually transform into a submissive M. This transformation draws her deeper into desire, leading her on a journey to experience entirely new sensations.