MGMQ-136 The son's girlfriend is a nagging slut who developed his ass while the son was out, making him cum repeatedly. Machi Ikuya.

"Machi" and "Ken" are lovers. Machi, who is aggressive and has a tendency to be forward, and Ken, who is submissive (M), have an S&M relationship. Hiroshi, the father who knows nothing about this, becomes curious about the noises coming from their room one day and ends up peeking inside. What he sees is his son being anally penetrated by his girlfriend! Ever since then, Hiroshi can't stop thinking about Machi. Machi, sensing this, seduces and toys with her boyfriend's father, making him addicted to forbidden pleasures in the room without her boyfriend...!