Art style: Cinematic Realistic.
Lumi is standing still on the dark cobblestones, looking back over her shoulder with wide, startled eyes. The street is empty behind her, except for her own shadow which is disconnected and several feet away. The lighting is cold and moody, casting sharp highlights on Lumi's face. The palette is dominated by cold teals and deep shadows.
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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 "Cinematic Realistic" style. Match the lighting grammar, material response, colour science, level of realism / stylisation, line weight, and shading model typical of "Cinematic Realistic". 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 "Cinematic Realistic" idiom, not in any other medium.
