Film Noir Cleaner Portrait Prompt for Nano Banana Pro

A man with a cold, stern expression (100% matching the facial features, hairstyle, and glasses of the person in the attached image) stands still at the entrance of a dim alley, with only a faint beam of light illuminating half of his face and body — the light divides the man's face and body in two, with the other half of his face and body fading into darkness, blurred. He wears a black shirt and a classic long black coat, the fabric barely visible in the darkness. His lowered hand holds a pistol. The alley behind him gradually disappears into pitch black. The photo is shot in a strong film-noir style, a medium-shot black-and-white photo. Note: 1. Do not change his facial features. 2. Hard light from above, but no light source should be visible. 3. The light should only illuminate the specified parts of the person's body, and should not affect the background's tone or brightness. 4. The composition must be absolutely centered. --ar 9:16