The private training record of a newhalf named Rei, possessing the stunning beauty of an older sister gyaru, is revealed. Born as the eldest son of a prestigious family rooted in the countryside, Rei was raised under the strict discipline of a domineering father. From childhood, Rei was blessed with delicate, refined features. Following the teachings of the father—a respected local figure—Rei walked a rigid path in life, until one fateful SM magazine changed everything. Hidden in the father's study, the magazine depicted heroines in bondage: collared and chained, limbs restrained, undergoing training that portrayed intense emotions—humiliation, pain, shame, pleasure, and climax. Captivated by the imagery, a masochistic ideal was etched into Rei's adolescent mind. This desire led not only to hormone therapy and full feminization, but also to body modifications and decorative piercings. As a result, nipple piercings were installed, heightening sensitivity to a level comparable to clitoral stimulation. When the nipples are pinched, waves of pleasure surge through the entire body, sharp pain piercing the brain and intensifying sensation, allowing orgasm to be achieved through nipple stimulation alone. The pleasure continues endlessly, each climax leaving a lingering aftershock that transforms the entire body into one vast erogenous zone. Witness Rei, lost in an unceasing cascade of relentless, back-to-back orgasms.