Shortly after her daughter got married and moved in, Shoko Furukawa found herself emotionally shaken by the loss of her husband, but gradually grew accustomed to their new life as a family of three. Though her daughter could be difficult at times, her kind and supportive son-in-law helped Shoko regain her smile. Years passed, and one afternoon during a weekend, while her daughter was out, Shoko went to collect laundry and entered the couple's bedroom. There, she found her son-in-law napping, lying on his back with his stomach exposed. Surprised yet unconsciously drawn to him, she approached closer. Then she noticed movement in his crotch—something she'd never paid attention to despite living together all this time—and suddenly felt a flush of embarrassment. Yet she couldn't look away, and impulsively reached out to touch him slightly. Seeing his cock twitch in response excited her, and once she confirmed he was still sound asleep, she slowly pulled down his pants. A thick, powerful shaft sprang out, captivating her completely. She began touching it with her lips, growing increasingly enthralled as it stiffened, sucking it eagerly. Finally, she caught his thick, white cum in her mouth, standing still afterward with a blissful, dazed expression on her face.