Polished anime 2.5D next-gen 3D game art style of adult man seated on

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Polished anime 2.5D next-gen 3D game art style of adult man seated on black rubber gym flooring, legs extended forward with knees slightly bent; right hand pulling up the waistband of dark shorts or underwear near the crotch area while wearing a blue button-up shirt that is partially unbuttoned and sleeves rolled; Shirtless adult male torso visible but head out of frame center-right; Thick thighs, defined quadriceps and hamstrings exposed fully; White crew socks on both feet; Indoor gym setting with brown leather bench edge bottom-left; Soft directional lighting highlighting leg musculature; Vertical portrait 13:19 aspect ratio; High-quality character rendering expressive athletic anatomy; single clean uninterrupted artwork with a cohesive composition and plain continuous surrounding surfaces