Ayako is married to a man with a son, and her stepson, now an adult, doesn't live with them. However, he has always been considerate toward his stepmother Ayako, maintaining a good relationship through occasional meals together a few times a year. One day, due to a long business trip, the stepson temporarily moves in. Excited by this unexpected reunion, Ayako cheerfully prepares to welcome him with full hospitality. The stepson enjoys her warm reception and indulges in the comfort. However, being somewhat weak with alcohol, he retires to his room early. Late at night, he wakes up, puts on earphones with his smartphone in hand, and begins masturbating. Ayako, awakened as well, notices and catches sight of his act. She is stunned by the sight of his large cock—something she hasn't seen in years, as her older husband has long been inactive sexually. At her peak as a mature woman, the sight deeply excites her. She quietly slips away back to her room, but her pussy throbs intensely. Later, while cleaning his room during the day, she recalls his cock, her hand instinctively drifting to her crotch, lost in shameless fantasies. Days later, her husband leaves on a business trip, leaving Ayako home alone. Suddenly, her stepson’s work plans cancel, and the alcohol she ordered arrives. He returns home just as she's about to drink. Overjoyed, she invites him to drink together. Slightly drunk, her subtle flashes of skin begin to stir his cock. Though flustered, the stepson can't hide his arousal. Ayako, appearing both shy and pleased, gently places her hand on it, then slowly starts sucking him, savoring every inch.