Eimi-san, my sister-in-law, is cold towards me and beautiful but a bit frail. One day while watching AV, she suddenly walked into the room sweating. And for some reason, I decided to watch AV together without going outside. Responsible because I couldn't sleep in the room. Crossing the line with my sister-in-law in Japan, a secret life began. Is the stubborn attitude when being with family a barrier for the husband? Living a life of infidelity without a brother-in-law.
