Sayako is a mother in her fifties with a ripe, voluptuous body and a lovely face. When her mother is busy with housework and complains of back pain, her son gives her a massage and starts to rub her waist in a sticky, lewd manner, but he has an unusual interest in her soft, white, big ass. Unable to suppress his desire for his mother's ripe body and big ass, the son devours her protruding ass and approaches his mother. The mother is confused by this sudden act, but her ripe pussy is wet with lust and she is immersed in forbidden intercourse, shaking her big ass in ecstasy!