Years after their father's death, the mother—who had withdrawn from the outside world—finally seemed to have regained her composure and visited her son and his wife's new home. Seeing her lively appearance, the son felt genuine relief. That night, he accidentally witnessed his mother bathing up close and felt an intense arousal toward her naked body. Late at night, he tried initiating intimacy with his wife after a long time, but was rejected once again. Driven by pent-up desire, he sneaked into his mother's bedroom, pulled back the covers, and began touching her genitals. Gradually growing wet, her pussy excited him further until he finally erupted, shooting his semen directly onto her pubic hair. Pretending to be asleep, he watched her quietly leave, wiping away his cum, leaving her troubled by what had just happened. The next day, with his wife out, the son found himself alone with his mother. Suddenly, he grabbed her body, aggressively starting to fondle her. Though she resisted, she couldn't match his strength and ended up reluctantly pleasuring him orally and with her hands. The final line was not crossed—but pressed by her son's relentless desire, memories of her former lover stirred within her. Late that night, unable to sleep, the mother began masturbating, seeking release. Her heartbeat quickened, overwhelmed by a deep, insatiable craving. She climaxed repeatedly, yet her mature body remained unfulfilled. As if seeing through her longing, her son appeared before her. Already primed to accept him, she couldn't fully resist as his hard cock penetrated her. Her vagina filled completely, enveloped in pleasure, and she instantly reached orgasm…