A couple who became sexless because of their husband's age.For her wife, Maki, who is still young and frustrated, her husband decides to join a certain secret SM circle and asks, "I want you to satisfy her wife."Maki is bound, teased, and penetrated by the host's man, and while confused by her surging pleasure, she repeatedly screams and cums in front of her husband.The pain of the hemp rope that tightens her limbs, the miserable treatment of her like a livestock... All the stimulation becomes joy and makes Maki's uterus tremble, loses her ego as her wife, and she is just a mere. transforming into a female.She sucks the men's cocks in her frenzy and beats them against her own waist.Seeing her crazy figure, her husband also becomes aware of her own propensity that she didn't know...