After the death of her husband, Riko lives alone. Her daughter and son-in-law move in to take care of her as she seems listless. Although cohabitation was going well initially, the son-in-law was feeling frustrated every day. His mother-in-law's body was too alluring, and he couldn't help but fantasize about having sex with her. One day, the son-in-law came home early; his wife had gone shopping. As Riko was about to prepare for a bath, the son-in-law hugged her and started caressing her, saying she was too attractive. Although Riko resisted verbally, she was originally quite lewd. Despite saying 'no,' her private parts reacted immediately, dripping with lubrication. 'I never imagined... that my daughter's husband would have such a robust penis. I'm in trouble...' Riko unintentionally climaxed multiple times from the son-in-law's penis. One day, these activities were finally witnessed by his daughter...
