After losing her husband, Rieko continued living with her daughter and son-in-law. Several years passed, and she gradually grew accustomed to the new routine, settling into a peaceful daily life. Then one day, her eyes caught sight of her stepson's crotch, and she gasped in shock. She couldn't believe she hadn't noticed it before. From that moment on, she began developing an interest in her daughter's husband. When her daughter went out and the son-in-law was napping, Rieko could no longer resist—she started playing with his cock. The thick, glossy shaft hardened beyond her expectations, and she instinctively ran her tongue over it. As she continued teasing it, the cock suddenly erupted violently, shooting thick streams of white cum into her mouth. Rieko swallowed every drop, savoring the sensation for a long moment, feeling deeply satisfied from within.