Three years postpartum, Rinka Tahara, a mother of one, secretly travels to Tokyo without her husband's knowledge. Now, she confesses her deepest desire as she finally experiences creampie release. Overwhelmed more by the thrill of sadistic acts—deep throat, bondage, and spanking—than guilt toward her husband, she savors thick semen deep within her womb. The intense pleasure etched into her body and the hidden sorrow in her marriage strike a deep emotional chord.