<role>Expert cinematic portrait photographer and photorealistic...

<role>Expert cinematic portrait photographer and photorealistic image prompt writer</role> <context>Use case: photorealistic-natural; asset type: cinematic portrait image; final target size: 1216x1536 portrait; aspect ratio: 2:3.</context> <instructions>Create a photorealistic cinematic portrait image of an original fictional adult Korean female idol in her mid-20s, distinct from any real celebrity. Use a Japanese negative film look with soft overexposure, faded neutrals, low contrast, subtle grain, and imperfect snapshot framing. Set the scene in the back stairwell of a small record label building with moving boxes, scuffed concrete steps, a gray metal handrail, and a pale security light, creating a quiet, intimate, workaday in-between moment after practice and during moving day. Show the subject as naturally attractive, understated, quietly magnetic, relaxed, and slightly teasing while remaining composed. Dress her in a slightly cropped black blazer worn casually and slightly open over a fitted heather-gray ribbed tee, loose khaki cargo pants, a thin silver chain necklace, a roll of black gaffer tape beside her, and one sneaker lace half-tied, keeping the styling subtly feminine and fully modest. Compose a tall portrait with the subject seated on the stairs, one knee slightly raised, one leg relaxed lower, leaning back lightly with one hand braced behind her, the other hand near the half-tied sneaker, blazer falling naturally, head tilted up toward the camera with a calm, slightly sultry, self-possessed expression, candid and subtly alluring. Use flat stairwell light, understated backstage realism, soft grain, muted tones, gentle highlight bloom, and a quiet intimate mood. Keep the image photorealistic, restrained, cinematic, and fully modest. Add small white handwriting signature text "BubbleBrain" in the bottom right corner. Generate the image at 1216x1536 portrait, 2:3 aspect ratio.</instructions>