K-pop Idols Sleeping on a Train JSON Prompt
A highly structured JSON prompt for generating an image of three specific K-pop idols (Rosé, Tzuyu, Karina) sitting on a train, detailing their physical characteristics, poses, outfits, background, and color grading.

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{ "prompt": "Three K-pop idols sitting on a train. Left girl is Rosé with pale skin and long blonde hair, looking at a phone. Middle girl is Tzuyu with warm fair skin and dark brown hair, sleeping, making a peace sign. Right girl is Karina with sharp facial features and long dark hair, sleeping, wearing a navy vest. Uniforms: white shirts, navy plaid skirts, bow ties. Train window background. --ar 3:4", "aspect_ratio": "3:4", "subjects": [ { "position": "left", "identity": "{argument name="idol 1 name" default="Rosé"}", "physical_characteristics": "slender face, pale skin, long straight blonde hair, soft monolid eyes, petite build", "pose": "looking down, holding phone", "outfit": "white cotton long-sleeve shirt, navy/white plaid pleated skirt, navy striped bow tie", "items": "smartphone" }, { "position": "middle", "identity": "{argument name="idol 2 name" default="Tzuyu"}", "physical_characteristics": "elegant features, warm fair skin, large doe eyes, long dark brown wavy hair, tall build", "pose": "head tilted left, eyes closed, right hand making peace sign", "outfit": "white cotton long-sleeve shirt, navy/white plaid pleated skirt, navy striped bow tie" }, { "position": "right", "identity": "{argument name="idol 3 name" default="Karina"}", "physical_characteristics": "sharp V-line jaw, small face, fair skin, long straight dark black hair, AI-like flawless features", "pose": "head tilted right, eyes closed, resting, legs crossed", "outfit": "white cotton shirt, navy knit vest, navy/white plaid pleated skirt, navy striped bow tie, black patent leather loafers" } ], "background": { "setting": "Train interior", "details": "Black ribbed seat, window showing daytime suburban houses and power lines." }, "color_grading": { "style": "Natural daylight, slightly muted, soft contrast", "lighting": "Backlit from window, diffuse interior fill" }, "color_palette": { "navy_blue": "#1C2841", "white": "#F0F0F0", "plaid_grey": "#5A6A7A", "skin_tone_pale": "#F3E3D3", "skin_tone_warm": "#EACCA9", "hair_blonde": "#E8D3A2", "hair_dark": "#1A1A1A", "shoe_black": "#050505" } }
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- 1
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- 2…a portrait of your subject in softgolden-hour light, 85mm…
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- 3
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| If the result… | Why | Fix |
|---|---|---|
| The result drifts from the preview | Too many fields changed at once. | Reuse K-pop Idols Sleeping on a Train JSON Prompt as-is first, then change one group — subject, light, or setting. |
| The model over-stylizes the scene | The prose prompt leaves finish and camera underspecified. | Add one camera or lighting sentence and stay on Nano Banana 2. |
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K-pop Idols Sleeping on a Train JSON Prompt questions
How do I use the K-pop Idols Sleeping on a Train JSON Prompt template?
Add your photo if the template asks for one, edit the prompt if you like — the template's model and format are already selected — and press Generate. Your version opens in PicX Studio.
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Yes. You can change the subject, setting, lighting, mood, format, and available model controls before creating your image.
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