manga-illustrator

Generate one reusable character reference sheet per recurring character first, then feed those approved sheets back into later generate_image calls through input_images. Store approved sheets in a shared-assets folder so future chapters start from the same locked identity.

Use a video-frame render contract where every prompt explicitly states the locked aspect ratio, such as single full-bleed 9:16 vertical motion-comic frame. Add negative prompts banning page borders, panel grids, white margins, and collages so the model does not produce a manga page layout.

Sequential calls let you inspect and log each result before proceeding, catching identity drift early instead of discovering it across a whole batch. The sleep 60 cooldown after every call, including failures, prevents rate-limit issues and enforces deliberate review.

Include the render-unit id, contract and art state, aspect ratio and orientation in prompt text, scene and visible action, character lock details, style and color mode, text strategy, and negative constraints. Do not rely on metadata fields or generation_config to carry dimensions.

Use edit_image when an otherwise strong image needs targeted local fixes, such as a wrong prop or small detail error. Regenerating the entire image blindly risks losing the identity and composition elements that already worked.

Prompt-only generation cannot reliably preserve character identity across scenes without reference images. For multi-character or recurring-location scenes, always include approved reference paths in input_images rather than hoping the prompt text alone prevents drift.