One day at my house where I live with my wife, my mother-in-law suddenly came to Tokyo. She seems to have been scouted by her underwear model, and she seems to have jumped out of her parents' house to challenge. My wife and I decided to stay at home with her mother-in-law for a week to keep her head cool. And that night, on the way to her toilet, there was a noise from the room where her mother-in-law was. When I wondered something and looked into the room, my unskilled mother-in-law was wearing lingerie. I can't take my eyes off the bewitching expression of her mother-in-law and her underwear that I shouldn't normally see ...