When I went home to my wife's parents' house, my sister-in-law and her husband were also accidentally returning home. I'm attracted to the charm of my sister-in-law, who is more beautiful than my wife, and I stare at it many times. And I fantasize in my heart that I wish I could do such things with my sister-in-law. Then, the temptation from the sister-in-law! Even though it's my brother-in-law, as long as I'm a younger brother, this is incest.