In order to take care of my wife who is about to give birth, my mother-in-law Yuri came to our house many times between work. I thought that my mother-in-law would make things a little easier, but my wife and I were constantly fighting and she even banned me from masturbating. A few days later, when I was alone with Yuri, I confessed that I had been obeying the no-masturbation rule for a week. Yuri was surprised, but with a kind face, she suggested, "Shall I do it for you?" Ignoring my stiffness, Yuri's obscene fingertips reached down to my crotch...