(masterpiece, best quality, photorealistic), back view, from below, Japanese young woman, Tsubaki, 26 years old, (short), thick, large round breasts, bubble butt, round face shape, fair skin with a smooth rosy undertone, dark brown almond-shaped eyes with a slight upward tilt, moderately large eyes, double eyelids, dark brown eyebrows with a soft natural arch, moderately thick and extending past the outer eye corners, full lips with a soft pinkish-red color and a distinct cupid’s bow, lower lip slightly fuller, narrow nose with a medium length, straight bridge, and slightly upturned tip, moderately prominent cheekbones, (straight bob haircut, hair just above the shoulders, full blunt bangs covering the forehead, smooth and sleek hair texture, dark brown hair), hairband, white tank top, dark blue athletic bloomers, sex, standing sex, suspended congress sex position, penis in pussy, (1man, muscular, tall), gym storeroom, captured with Sony A7 III, sharp focus, best shadow, 8K, UHD, clear image, extremely sharp, extremely detailed, extremely intricate detail, high res, ultra-high-definition, highly detailed, ultra-sharp textures, finely detailed, perfect skin texture, hyperrealistic lighting, professional photography, full dynamic range, deep contrast, high clarity, realistic depth of field, HDR, perfect exposure, smooth gradients, volumetric lighting, natural reflections, ultra-fine details, realistic skin pores, individual hair strands, soft shadows, color-graded