While stroking my mother's back, my eyes are drawn to her soft, voluptuous ass. Even though it's just another ordinary day, everything changes when night falls. With my father away on a business trip, my mother straddles a dildo and indulges in masturbation all by herself. Her intense up-and-down movements make her sweat, her body trembling as she reaches climax—a sight that holds a melancholic beauty far beyond mere pornography. Watching her like this, I can no longer deny what I've become. Overwhelmed by emotion, surprised at my own actions, I keep stroking her back, enveloped by her warmth, unable to hold back any longer.