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's been even more hostile than before, and she's furious at me for pleasuring myself alone, and she's banned me from masturbating. A few days later, when I was feeling frustrated and frustrated with my sexual desire, Kana, who had overheard our argument, offered to take my place. My sexual desire was on the verge of overflowing, so I made the excuse that it would only be once and asked Kana out...