日本小巷人像（面部模糊处理）

Create a realistic vertical street-fashion photograph of {argument name="subject" default="a young Japanese woman"} standing centered in a narrow urban backstreet in Japan during soft morning daylight. She is shown from about mid-thigh upward, facing the camera, with both arms raised and hands resting on top of her head, giving a playful little-devil smile implied by the pose. Her face is intentionally obscured by a centered soft-edged rectangular blur/mosaic block, while the rest of the image remains sharp and natural. She has long slightly messy {argument name="hair color" default="black hair"} falling over her shoulders and wears a {argument name="outerwear" default="light beige cardigan"} over a fitted {argument name="top" default="white cropped tank top"}, plus high-waisted blue denim jeans with the waist and navel visible. The background is a realistic Japanese alley with low buildings on both sides, a metal shutter storefront and bicycle on the left, stacked crates near the curb, potted plants and a vending machine on the right, overhead utility wires, and shallow depth of field. Use a candid smartphone/editorial photo look, natural skin tones, cool daylight, slightly wide-angle perspective, subtle film grain, no text, no watermark, no extra people.