Atsushi Tanaka

Tatsuko, a widow, has a voracious appetite for men. When she and her daughter, Chiaki, simultaneously reach orgasm while masturbating, their souls end up swapping bodies. Shocked as they stare at one another, they decide to go about their lives in each other's bodies for the time being. Feeling as though she has regained her youth, Tatsuko indulges in sexual escapades with men using her daughter's body. Meanwhile, Chiaki—who is still a virgin—experiences intimacy with a man for the first time using Tatsuko's body...

Simon, a professional rapist-for-hire, receives another assignment. His target, a woman named Momoe, is known for toying with men before discarding them like trash. Simon successfully carries out the job. Years later, now significantly aged, Simon considers retirement and begins searching for a young successor. In the midst of this, he crosses paths with Momoe once again. Ever since that encounter, she had awakened to the pleasures of womanhood—and, having turned her back on society, she had been searching for Simon’s whereabouts…