Once in the past, Naomi, a pure wife who had accidentally had a physical relationship with her father-in-law. Although she wants to erase it from her memory, she visits him today to take care of his surroundings. While doing housework in the kitchen, her father-in-law appears behind her and gropes her body while giving her persistent kisses. "Father-in-law, please stop," she pleads, but his penis is harder, bigger, and more curved than her husband's, and he vigorously thrusts into her from behind. Unable to control her body's reaction, Naomi gradually begins to move her hips herself.