Her husband is constantly away on business. Her body is not satisfied. Yuka's accumulated frustrations explode as she masturbates to orgasm. Her only son, who knows how lonely Yuka is, decides to embrace her in place of his father, hoping to ease her loneliness even a little. "I don't want to see my mother's sad face anymore." Yuka is confused, but senses her son's strong determination and gives in to him... but the intense pleasure she experienced once eats away at her, making her body unable to live without her son...