One day, Yukio, who got drunk and took a rest at a friend's house, witnessed with a drowsy eye that his friend and his fifty mother were indecently entwined. Yukio, who is lustful for her ripe white, soft and plump body, her huge breasts and big butt, and drowning in forbidden pleasure, tells her friend's mother. The fifty mother who was aching her ripe and thriving body every day also exposed her big breasts and showed her thick omako and wanted to act with Yukio and drowned in lust and went crazy!