A photorealistic adult woman lying sideways on a sofa in a relaxed, slightly curled pose. Her entire body is positioned diagonally across the sofa, with her head toward the upper-right area of the frame and her legs extending toward the lower-left foreground. Her torso is resting on her side, slightly angled toward the camera. Her upper body is elongated diagonally, with one shoulder closer to the camera and her hips positioned farther toward the left side of the frame. Her head is tilted slightly toward the camera and rests gently on both hands. Both arms are bent at the elbows and positioned underneath and beside her head, creating a soft pillow-like support with her hands close together near her temple. Her elbows point downward toward the sofa, while her forearms run upward toward her face. Her shoulders and arms remain relaxed rather than tense. Her legs extend diagonally toward the foreground. The thighs are positioned close together and overlap visually. One leg is placed slightly in front of the other, with the knees gently bent rather than fully straight. The legs form a natural, soft S-shaped curve as they extend toward the bottom-left and lower-center of the frame. The lower body remains relaxed and naturally aligned with the sideways position of the torso. The overall pose should feel casual, intimate, and naturally relaxed, as if she is comfortably lying on a sofa and looking toward the camera. Preserve the exact spatial relationship between the head, arms, torso, hips, knees, and legs, head in the upper-right, torso diagonally across the center, hips toward the left-middle, and bent legs extending prominently into the lower foreground., ((She is complete naked)), ., ((A naked man is lying behind her. He has an erect penis. He fucks her pussy from behind)), vaginal sex. cock in her pussy. Camera positioned slightly above and in front of the sofa, capturing the full body from head to legs. Vertical composition, with the body filling most of the frame. Natural anatomy, realistic proportions, relaxed posture, subtle body asymmetry, and realistic contact between the body and sofa cushions.