A window cleaner in coral coveralls stands on an enclosed balcony above a city where thick cream clouds fill the streets between slim office towers. GPT Image 2.5 Sunburst handles it well because the prompt pairs two clear techniques, crisp manga ink lines and soft gouache clouds, with a tight three-color palette.
This look depends on a clear split between sharp ink and soft paint, held together by a small, warm-and-cool color scheme.
- Line
- Fine manga penwork outlines railings, window grids and tile joints. It gives the towers a precise, drafted feel and keeps the scene readable even with clouds filling the frame.
- Texture
- Gouache clouds look matte, slightly streaky and opaque, like brushed paint. They contrast with the thin ink lines and give the image its handmade, illustrated quality.
- Palette
- Teal glass, peach concrete, cream cloud and one coral figure. Cool and warm tones are balanced, so the worker stands out without needing a heavy outline or a bright background.
- Light
- Soft midday light means even brightness and gentle shadows. It keeps the cream clouds luminous instead of gray, and it supports the quiet, still mood of the afternoon.
Model and settings
Keep the 16:9 ratio, since the wide frame lets the towers, clouds and balcony all fit with room to spare. Keep quality on high so the thin ink lines stay crisp and the facade tiles don't blur. For a phone wallpaper or poster, switch to a tall ratio and move the worker higher in the frame. Lower quality is fine for rough drafts, but fine line detail suffers.
Seedream 5.0 ProChoose it when you want richer detail in the facades and tiles, or when you have reference pictures to match a specific manga linework style.
Nano Banana 2.1A good pick if you want sharp, high-resolution output and plan to add clean text later, such as a title on a poster version.
When the style drifts
- The style washes out into generic anime with smooth gradient clouds.
- Repeat the contrast in stronger words: 'visible gouache brush texture on the clouds, matte and chalky, with thin black ink outlines on the buildings only'.
- The clouds sit in the sky instead of at street level.
- Make the position explicit: 'clouds filling the street below, the ground hidden by cloud, towers rising out of it'.
- Colors turn muddy or gray instead of teal, peach and cream.
- Keep the three named colors and add 'bright, clean, low-contrast pastel palette, no gray shadows'. Avoid adding extra colors.
- Signs or lettering appear on the buildings.
- Keep 'no logos, no readable signs' at the end and add 'blank plain facades, no text anywhere'.