(masterpiece, best quality, photorealistic, ultra-detailed, highres, 8k), 1girl, 23-year-old fitness trainer, long straight platinum blonde hair, large blue eyes, full plump lips, fair skin, slim hourglass figure, very narrow waist, very large round fake breasts, completely naked, restrained in black leather bondage, wrists tied behind back, leather collar with chain, kneeling on gym mat, back painfully arched, mouth forced open with ring gag, tears and sweat on face, expression of intense pain and submission, massive black dildo brutally penetrating her anus, extreme anal stretching, huge transparent dildo stretching her vagina, double penetration, glossy sweat on skin, dimly lit gym, dramatic cinematic lighting, harsh shadows, HDR, sharp focus, highly detailed skin texture, BDSM,