An ordinary woman with no particularly strong masochistic tendencies is bound into a wide M-shaped spread, with ropes threaded tightly between her legs to stimulate her genitals. Her body is reflected in a mirror as one leg is raised high and tied to a pillar, exposing her completely. While her pussy is teased and fingers probe her slit, she is spanked repeatedly, intensifying the training. Gradually, her expression melts into ecstasy, and she begins desperately begging for penetration. Breaking the SM industry taboo of "the rope master fucking his subject," Nuejin Ren delivers relentless creampie-style sex through his signature kinbaku technique. The woman, Satomi Mayu, experiences unimaginable pleasure unlike anything she's ever known, climaxing again and again under his control.