Masae Ishihara is a grandmother in her sixties who has been raising her grandson alone after his parents died in an accident. Her love for her grandson leads to excessive affection... a time of immorality in which she accepts everything he asks of her. She carefully and sticky sucks his big, strong cock, and in Kokoro she has always desired to have raw, incestuous sex with her beloved grandson. The forbidden pleasure of a complex mix of immorality and maternal love brings the grandmother in her sixties to a lascivious climax. Two thick loads of raw creampie semen are released into the grandmother in her sixties' vagina!