My mother-in-law, Ryo, has been living with us since yesterday to support my pregnant wife. Thanks to my mother-in-law, housework has become easier, and I've let my guard down, leading my wife to find the trash can full of stuff from masturbating too much. Then, my wife, who has had enough of it, issues a no-masturbation order until the baby is born. A few days later, I was learning how to cook from Ryo, but her seductive gestures made my crotch react. Unable to bear seeing me like this, Ryo makes an immoral suggestion...