Arriving at a beauty salon that advertised its "Sexy Development Program," model Rin was completely unaware of its true purpose. She endured strange explanations and an awkward questionnaire, but still hoped for the treatment's effects and accepted it… In the blink of an eye, her entire body was covered in lubricant, her sensitive body was being massaged by the masseuse, and a strong aphrodisiac oil stimulated her breasts and genitals; she was forced to undergo the "Sexy Development" treatment. She was overwhelmed by extreme pleasure, her consciousness blurred, and her rationality collapsed! Finally, she voluntarily requested another treatment. Rin learned the supine position, allowing a penis to rub against her G-spot until she reached orgasm! The increasingly intense erotic massage treatment had already surpassed its limits…