It was fine until I went on a hot spring trip with my best friend's wife, until I saw that scene. I saw Naoya's wife burying her face in Naoya's crotch through the slightly opened shoji screen. Even though she noticed me, she didn't stop licking and looked at me as if to say, "Look at how vulgar I am." Late at night, after some alcohol, a soft sensation hit me and the smell of my best friend's wife came over me, asking, "Will you hold me?" I lost control and engaged in obscene sex with my best friend's wife over and over again.