I was invited by my wife's parents to go on a hot spring trip with my family of four. In order to try to get pregnant, my father-in-law ordered me to live abstinence for the first month, and I had decided to hold my wife on this day, but a couple's fight broke out. I lost sight of the blazing sexual desire that had accumulated, and I was at a loss as I stared at my erect penis, even without touching it. That night, I couldn't sleep so I headed to the bathroom to try and distract myself for even a little, but by chance I saw my stepmother taking a sensual bath...