(masterpiece:1.4), (best quality:1.3), jiyeon_oc:1.2, A beautiful girl with a sm

(masterpiece:1.4), (best quality:1.3), jiyeon_oc:1.2, A beautiful girl with a small frame, **medium long shot (from head to mid-thigh)**, eye-level front view, inside a **Seoul subway train with standard longitudinal seating arrangement**, **perfectly symmetrical composition limited to the window wall behind the girl**, focus on a pure Korean girl with long black hair, one side pinned with a small silver hairpin, Light skin tone, wearing cream loose-fit knit sweater off one shoulder and gray 'high-waist pleated skirt', with a small pink backpack on her back. She is sitting **in a normal subway seat facing forward**, playing a slightly worn brown acoustic guitar and singing passionately, her left hand fretting chords, right hand strumming. **The subway window wall behind her is perfectly parallel to the frame**, showing heavily motion-blurred station scenery ("Seoul Station" sign in Korean). **Seats are arranged in realistic subway layout along the sides of the carriage**. Lighting: contrast between cool interior subway lights and warm yellow station lights flowing through the window from behind. Shallow depth of field, sharp focus only on the girl's face and guitar hands. Background: other seated passengers softly blurred - on her left side, a student gazing out window, standing person. on her right side, an office worker watching phone with headphones. Standing passengers visible only from waist down with motion blur. Mood: emotionally charged, lonely yet warm, K-indie music video style. Mature, realistic HD photography, Professional Lighting, Vivid Color, Realistic Texture, 4K High Resolution, Delicate Insertion, panoramic, Perfect anatomy, flexible body, natural movements and facial expressions, natural gaze processing,

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