I noticed my son's wife, Shizuka, heading toward an apartment wearing clothes slightly more revealing than usual. Out of curiosity, I followed her and saw her enter a room embracing a young man. That night, back at home, I glanced toward the apartment again and discovered the two having sex. Heartbroken, I confronted Shizuka, who confessed that her relationship with my son had grown cold and her sexual frustration led her to cheat. Shocked by her words, I contacted her lover and decided to break them up. Seeing Shizuka looking depressed, I stared at her intently, sensing that her voluptuous body still ached with desire, and impulsively embraced her. Overcome with emotion, I suddenly regained my composure, apologized to Shizuka, and returned to my room. The next day, seeing Shizuka cleaning the house in tight-fitting clothes, I became aroused again and roughly pulled her into my arms. She resisted slightly at first, but then gave in, accepting my caresses as if resigned. I licked and teased her persistently until her body trembled in climax. After so long without a woman, I entered her. Thrusting hard, I made her climax quickly. For several days afterward, an awkward tension lingered between us—until Shizuka unexpectedly said, "I think we'll do it tonight, so please watch." I peeked to see what my son was like in bed, and immediately realized why Shizuka had turned to infidelity. I called her out, told her I'd witnessed their act, and said she must be unsatisfied. Then I pressed her hand against my erect cock. Shizuka grabbed my hand and guided it to her wet pussy, whispering that she could no longer hold back. Without a word, I nodded and kissed her deeply...