Film Noir Cleaner Portrait Prompt for Nano Banana Pro

A stern-faced man (100% accurate facial features, hairstyle, and glasses as depicted in the attached image) stands silently at the entrance of a dimly lit alley. Only a faint beam of light illuminates half of his face and body, dividing them in two; the other half remains obscured in darkness. He wears a black shirt and a classic long black overcoat, the fabric almost invisible in the darkness. His hand, hanging down, grips a pistol. The alley disappears into the darkness behind him. The photograph is a medium-range black and white shot with a strong film noir style. Note: 1. His facial features must not be altered. 2. Hard lighting from above, but no visible light source. 3. The light should only illuminate the designated part of the man's body; the light should not affect the background's tone or brightness. 4. The composition must be perfectly centered. --ar 9:16