Aoi Tsukasa has been happily married for a short period of time. Since her mother-in-law passed away, the Father-in-law (Ozawa Tōru), has been living alone.
So Aoi husband proposes to move over with the Father, so they can keep him company. Since Ozawa-san has an affable and amicable personality, Aoi-chan agrees happily.
But in reality, Ozawa Tōru has been tormented and lonely since her wife passed away.
One day the Father-in-law and Aoi-chan bump in the toilet, and he sees Aoi-chan naked, getting an instant boner… And that made him say goodbye to sanity. The next day, while the son is on the shower for 30 minutes, the father-in-law jumps on Aoi-chan. Which initially refuses, but the pure thrill of doing risky sex in a mere 30-minute window is too much for her too. Which ends up developing a taste for it…Cuckold, Humiliation, Married Woman, Rape