Art style: Anime cel-shaded manga.
A young man in his late teens with a muscular, athletic physique and messy short black hair. He wears a navy blue athletic tank top and matching shorts. Sweat glistens on his skin, and his face shows intense concentration. He stands in a dark, industrial gym with concrete walls. The lighting is moody, highlighting his muscle definition and focused expression.
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FINAL STYLE ENFORCEMENT (this is the authoritative rendering directive — it overrides any style wording elsewhere in the prompt):
Render this image entirely in "Anime cel-shaded manga" style. Match the lighting grammar, material response, colour science, level of realism / stylisation, line weight, and shading model typical of "Anime cel-shaded manga". Keep the subject, composition, camera angle, lighting direction, and colour palette from the description above — but EVERY surface, skin, fabric, material, and environmental element must be rendered in the "Anime cel-shaded manga" idiom, not in any other medium.
