Incest "Make me cum! Make me cum quickly!" Sadistic son's stop mating

Maki, the second wife, has such a strong sexual desire that she attacks her husband in his sleep from the morning. Their son, Yuuji, who witnessed these two's obscene acts on a daily basis, spent his days in agony. One day, Yuuji approaches Maki while his father leaves. Then, Maki, who loves men and anything that feels good, accepts Yuji without refusing. However, Yuji was a sadistic son who stopped Maki when she was about to cum.