A muscular man in a gym turns his head while holding a katana

{
  "REFERENCE_IMAGE": "Use the uploaded image as the facial, body, hairstyle, pose, and composition reference.",
  "prompt": "Create an ultra-photorealistic cinematic fitness portrait using the uploaded image as the primary reference. Preserve the subject's facial structure, hairstyle, muscular physique, body proportions, skin tone, expression, pose, and overall identity exactly.\n\nThe subject is standing in a premium modern gym, viewed from a three-quarter rear angle while turning his head over his shoulder toward the camera. His left hand casually lifts the back of his oversized sleeveless tank top while his right hand holds a traditional Japanese katana with the blade pointing diagonally toward the floor. The pose should feel calm, powerful, and confident rather than aggressive.\n\nOutfit:\n- Oversized deep charcoal or black sleeveless tank top with large arm openings.\n- Loose cream/off-white wide-leg trousers with soft natural folds.\n- Chunky matte black sneakers.\n- Small silver stud earrings.\n\nEnvironment:\n- Luxury commercial gym.\n- Squat racks and weight machines softly blurred in the background.\n- Large glowing white rectangular backlit panel positioned directly behind the subject.\n- Dark industrial interior with black walls and premium rubber gym flooring.\n- Clean, minimal composition with no distractions.\n\nLighting:\n- Bright diffused backlight from the large panel.\n- Soft cinematic key light from camera left.\n- Gentle rim lighting emphasizing shoulders, arms, back muscles, and jawline.\n- Warm realistic skin tones.\n- High dynamic range.\n- Premium editorial fitness lighting.\n\nCamera:\n- Full-body vertical composition.\n- Eye-level camera angle.\n- 85mm lens.\n- f/2.0 aperture.\n- Soft background bokeh.\n- Extremely sharp focus on the subject.\n\nStyle:\n- Hyper-realistic.\n- Luxury fitness editorial.\n- Cinematic realism.\n- Premium sportswear campaign.\n- Highly detailed skin texture.\n- Visible muscle definition.\n- Natural fabric textures.\n- Matte color grading.\n- Subtle film grain.\n- High-end commercial photography.\n- Clean minimalist aesthetic.\n\nNegative Prompt:\nLow quality, blurry, cartoon, CGI, AI artifacts, unrealistic anatomy, duplicate limbs, extra fingers, bad hands, distorted face, incorrect facial features, poor proportions, overexposed highlights, oversaturated colors, plastic skin, excessive sharpening, noise, watermark, logo, text, cropped body, motion blur, floating objects, bent sword, damaged clothing, cluttered background.",
  "settings": {
    "aspect_ratio": "4:5",
    "quality": "ultra",
    "photorealism": "maximum",
    "style": "cinematic editorial fitness photography",
    "camera": "85mm DSLR",
    "lighting": "soft cinematic gym lighting with bright backlit panel",
    "reference_strength": 1,
    "preserve_identity": true
  }
}