Realistic candid smartphone snapshot, rear low angle: young East Asian woman ear

Realistic candid smartphone snapshot, rear low angle: young East Asian woman early 20s on Tokyo subway escalator, strict back view only. Long wavy light ashy brown hair, slim toned physique. White tight cropped top exposing midriff, ultra-short distressed faded denim shorts frayed raw hem riding high exposing lower buttock side skin both sides. Relaxed pose: left hand on handrail, right hand holding smartphone, head tilted down at screen. Black crossbody bag gold chain. Bright modern subway: beige/metallic panels, yellow safety lines, overhead fluorescent + soft daylight, Japanese signs, distant commuters. Sharp natural details subtle grain, medium DOF, soft highlights on fair warm skin. Casual Tokyo street fashion aesthetic, candid authentic moment. 9:16 vertical. Negative: face visible, frontal/side view, longer shorts, studio lighting, blurry, deformed, cartoon.