Prompt

Photorealistic single frame. As she turns her ass to the left, a man immediately, quickly and smoothly enters from the left, the man pulls her pants down, the man immediately and smoothly inserts his huge erect penis deep in her ass and immediately starting pushes his huge cock inside of her ass. The man is fully nude, stepping in close behind her, hands gripping her hips as he drives his cock into her ass deep. Her mouth is open in a moan, her eyes squeezed shut. Skin detail, sweat, and fluids visible, raw intensity emphasized. Lighting clear, sharp focus on penetration and full body motion.