Miyuki, a grandmother in her sixties, lives alone with her grandson. To comfort her grandson who is exhausted from work, she uses her voluptuous G-cup body, which is hard to believe for a woman in her sixties, to make him feel better. Even though she knows it's wrong, Miyuki can't refuse her grandson who desires her body... Her lewd relationship is seen by her grandson's colleague, and they end up having casual sex while the grandson is out. Miyuki continues to suck the young man's cock in her vagina, and is filled with indescribable pleasure, climaxing lustfully in this incestuous sex that is different from the past, with a thick creampie.