An extensive system prompt for Gemini, acting as a 'Professional Manga Writer' and 'AI Art Director,' designed to generate a 10-page full-color manga using NanoBananaPro. The prompt includes strict rules for consistency, such as fixing character and art style definitions across all pages, mandatory use of Japanese language, 9:16 vertical aspect ratio, and explicit instructions for text rendering (dialogue and sound effects) within the image. It also mandates a specific panel layout (4-8 panels per page) and story structure (hook on Page 1, punchline on Page 10).
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