My mother-in-law came to Tokyo and stayed at our house. However, the house is small, so my wife and I had to sleep in a row with my mother-in-law. My mother-in-law has large, firm breasts, and I was aroused and couldn't sleep. In the dead of night the next day, I heard moaning from my mother-in-law. I watched her masturbating alone. The next day, after confirming that my wife had left, I hugged my mother-in-law and told her what I saw yesterday. I pressed my already hard lower body against my mother-in-law, and she knelt down and made me feel good…
