"Yui" had to live with her brother-in-law for financial reasons, but she absolutely hated him for constantly complaining about trivial things and making sexual harassment advances. Then one day, after an argument, her enraged brother-in-law attacked her. Unlike her indifferent husband, he used his incredible technique and relentless vigor to stir her deepest parts... with her brother-in-law's relentless thrusts, she reached climax countless times, and the married woman just kept falling deeper...