Rin lost her husband two years ago and lived with her husband's daughter. Her daughter is now married and she lives with her daughter and her husband. She didn't feel lonely these days, but she thought she missed her human skin. One day, her daughter and son-in-law were hanging out in her living room. Rin masturbates while looking into it, but the thickness of her fingers is not enough. One day, she and her son-in-law have dinner together. Her son-in-law knocked over the glass and spilled the liquor on his crotch. Rin rushes to take off her pants and notices her son-in-law's erect penis...
