I had returned to my wife's parents' house. Once in a while, I went on a hot spring trip with my family of four, thinking that my mother-in-law and wife would forget about housework and take time to relax. I had another purpose. I have a stronger sexual desire, and after returning home, I spent three days unable to have sex and couldn't sleep. I was in a room where we were alone, and I was determined to do it tonight, but my wife fell asleep early and was spending a frustrated night when I happened to see my stepmother undressing...