On the third anniversary of my father-in-law's death, my wife and I were returning to my wife's parents' home. My mother-in-law, Momoko, was always beautiful, and her defenseless appearance always made my heart flutter. That night, he can't stand it anymore and approaches his wife, but after she refuses, he is ordered to abstain while returning home. I was planning to protect her reluctantly, but my relative suggested alcohol and I ended up going down with my sexual desire at its max. When I woke up, my rational brakes broke and I jumped at Momoko's voluptuous ass right in front of me...