A K-pop idol sits on foggy steps holding a white balloon

Primary request: Create a photorealistic image of a fictional adult Korean female idol in her mid-20s, not resembling any real celebrity, with a poised but private fashion portrait mood.

Scene/backdrop: a small coastal weather station platform, concrete steps, pale instrument boxes, a simple wind vane, thin sea fog, soft clouds, no readable labels.

Subject/clothing/pose: she wears a silver-grey windbreaker over a cream knit top, a pleated charcoal midi skirt over opaque tights, and minimal white sneakers. She sits on the concrete step with one knee raised and one foot lower, holding the string of a small matte white weather balloon just out of frame while her other hand steadies against the step. Hair moves gently in the wind; expression distant, lips relaxed.

Style/medium: Japanese negative film aesthetic, soft natural coastal light, slight overexposed fog highlights, low contrast, muted faded colors, subtle grain, imperfect composition, memory-like realism.

Constraints: adult subject, tasteful non-explicit fashion portrait, no nudity, no minors, no logos, no readable text, no watermark.

Avoid: rooftop, cold bottle, plastic bag, white oversized shirt, shorts, dramatic sci-fi lab look, real celebrity likeness. 

--ar 9:16