A private training record of the beautiful transsexual sister Gal-type <Rei>.Rei, the eldest son of a family that has been in the countryside for generations, has been blessed with a well-proportioned face since childhood.Rei has lived according to the instructions of his strict father, whom he respects as a local celebrity.His life was turned upside down by a stack of SM magazines hidden in his father's study.The novel in the magazine depicts the training scene of the female heroine who is chained by her collar and restrained by her handcuffs and fetters.Shame, pain, humiliation, pleasure, climax... Her heart was fascinated by the appearance of the heroine serving men's sex.Her appearance, which fascinated even her father, who seemed to be strict, was engraved in the heart of the adolescent <Rei>.However, what captivated <Rei>'s heart was a 'beautiful masochistic woman', which became the ideal figure that <Rei> sought.The feminization by taking hormones is also for that ideal... Rei's feminizing body and masochist propensity are mixed, and the suppressed libido goes out of control. "I want a body that is more suitable for a masochist woman!" That wish not only directly remodeled the body to create feminine curves, but also decorated the body with piercings without hesitation.As a result, the pierced nipple was transformed into a genitalia that rivaled the clitoris.When the nipple is pinched as if crushing the piercing, the whole body is full of pleasure.The pain that penetrates the brain turns the nipple itself into an exposed erogenous zone, and <Rei> climaxes with just the nipple.The pleasure continues even after the pinching is stopped, and the lingering sensation transforms the whole body into an erogenous zone, producing the next pleasure.After that, endless climaxes that continue endlessly... Next, please check the infinite acme of the masochist <Rei>.