After my father-in-law passed away, I planned a hot spring trip to comfort my stepmother. Right after arriving, we headed to the hot springs, and I couldn't hide my shock at the sight of her after the bath. Her beauty and sexiness exceeded anything I'd imagined. After dinner, we casually drank together, but my wife, being a light drinker, went to bed early. Left alone with my stepmother, she gazed at me with moist eyes. Captivated by her gaze, I found myself falling for her. As I guided the drunken woman to her futon, she suddenly called out my father-in-law's name and clung to me. The moment our soft lips touched, all reason vanished. Though she realized it wasn't her husband but me, there was no turning back—she crossed the line with me.