"Haoto" had been taking care of her father-in-law, who was bedridden with a fever. While changing the towel on his forehead, her underwear accidentally came into view. The father-in-law, though flustered, tried to restrain himself knowing she was his son's wife, but couldn't control his lower body's reaction to her allure. One day, while wiping his body, Haoto was confronted with his erect penis, and couldn't help but gaze at her father-in-law's manhood, nearly twice the size of her husband's. That night, unable to forget his robust penis, Haoto began masturbating during her bath, unaware her father-in-law was watching. Unable to endure any longer, the father-in-law, with little experience himself, slowly began to discipline Haoto's body. Haoto, too, became infatuated with her father-in-law, and they repeatedly came together. Then, during one of their encounters, an incident occurred... Case number 251759.