Mari (Aoi), who is estranged from nighttime negotiations with her husband and can't control the pain in her body, only masturbates to comfort her body. One day, when Mari woke up and went to the bathroom, her son (Satoshi) came out holding her crotch. Mari, who was suspicious, pulled her pants down and looked at her son's crotch, which was so tense that he couldn't even use it. She drained her son's venom from his inability to ejaculate.
