Hyper-realistic, 8k UHD, masterpiece, highly detailed, sharp focus, cinematic lighting, explicit sexual intercourse, on a bed, silhouette of a voluptuous blonde woman kneeling straddling man and a muscular dark-skinned man lying on his back, cowgirl position, deep contrast, stark silhouette definition, penetration, cock entering vagina, enormous pendulous breasts hanging down, visible breast contours, sweating, glistening bodies, curves and muscle definition, backlight through a large window, warm atmospheric light, rim lighting, erotic mood, intimate composition, focus on genitals and point of contact, moody shadows, high contrast, photorealistic skin textures, detailed anatomy