Living alone, my mother-in-law agreed to let my wife and me move in together. As a son-in-law, I tried to respect both her and my wife, but whenever I praised my mother-in-law, my wife became upset—and before I knew it, I’d been shut out of the bedroom for months. Rejected by my wife again tonight, I sat alone and lonely in the living room when my mother-in-law appeared. Complaining to her about my wife, she jokingly said, "If you'd like, I could help you feel better?" Tempted by her words, I let her lick me until I couldn't hold back and came. Smiling, she whispered, "Just tonight, okay?" and I nodded. The next day, recalling what happened, I decided to tease her and suddenly embraced her, groping her body. Though she resisted, she seemed to enjoy it—just as we were about to go further, my wife called me away. Frustrated at being interrupted at the best moment, I returned to my wife. That night, still unsatisfied, I snuck into my mother-in-law’s room, slipped under her futon while she slept, and began teasing her body. Soon, lewd sounds and scents filled the air. Startled awake, she gasped in surprise—but I couldn't wait any longer and thrust myself deep into her slit.