(masterpiece, best quality, photorealistic, ultra-detailed, highres, 8k), 1girl, 25-year-old prostitute, long wavy blonde hair, blue eyes, fair skin, slim yet curvy body, completely naked, restrained in black leather bondage, wrists tied behind back, leather collar with chain, kneeling on luxurious red velvet cushion, back deeply arched, mouth gagged with silver ball gag, tears streaming down cheeks, expression of mixed pain and ecstasy, gigantic black dildo brutally penetrating her anus, extreme anal stretching, severe gaping anus, visible anal prolapse, hands in black latex gloves stretching her anus wide open, glossy sweat on skin, in opulent sex club dungeon, red velvet walls, stainless steel sex swing in background, glass display case filled with dildos, vibrators, butt plugs, whips and BDSM equipment, dramatic cinematic lighting, spotlight effect, golden hour glow through stained glass window, HDR, sharp focus, highly detailed skin texture, realistic anatomy, BDSM