Two weeks ago, my mother-in-law Kana came to Tokyo to support my pregnant wife. I thought that Kana would make housework easier and improve my wife's mood, but she started to treat me even worse than before, and she got angry at me for pleasing myself alone and banned me from masturbating. A few days later, when I was feeling frustrated and frustrated, Kana, who had heard our argument, offered to take my place. My sexual desire was about to overflow, so I made the excuse that it would only be once and asked Kana out...