To help out with my pregnant wife, my mother-in-law Yuri would often visit us during her breaks from work. While her presence did ease things a bit, my wife and I were constantly fighting, and eventually, she even banned me from masturbating. A few days later, when I was alone with Yuri, I confessed that I had been abstaining from masturbation for a whole week. Despite being surprised, Yuri offered to help with a gentle smile, saying, "Let me do it for you?" Ignoring my frozen state, Yuri's lewd fingers reached towards my groin...