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BY@Dakiny
Jan 20, 2026

YAML Template for Web Manga Creation using Gemini (Nano Banana Pro)

YAML Template for Web Manga Creation using Gemini (Nano Banana Pro)

A comprehensive YAML-based prompt template designed for Gemini (referred to as Nano Banana Pro) to generate a four-tier web manga strip. It includes strict adherence rules for character consistency, detailed style guides (lighting, background, dialogue bubbles, visual effects), and a structured storyboard format for defining scenes and dialogue in each panel.

Prompt
STRICT ADHERENCE REQUIRED: - Follow this YAML specification precisely. Do NOT deviate, add unauthorized elements, or make 'creative' interpretations. - Character identity consistency from reference images (if provided) is PARAMOUNT. - Thorough image analysis is mandatory to maintain this consistency. Any result that fails character identity checks is unacceptable. Strict_Adherence: true aspect_ratio: "2:3" # 必要に応じて変更（例: "1:1", "16:9"） resolution: "2K" # 必要に応じて変更（例: "4K"） Character_Count: {{ 登場するキャラクターの総人数 }} Total_Panel_Count: {{ 総コマ数（4段構成のため通常4〜8枚） }} Summary: > 物語の全体要約。プロットの流れ、舞台設定、主な出来事、結末を簡潔に記述。 Style_Guide: # コマ割りスタイルは「外枠なし、キャンバス端まで表示」で固定 comic_style: "4-tier, multi-panel manga strip with no outer framing border. The panels should extend to the very edge of the canvas, separated only by the inner white dividing lines." lighting: "{{ ライティングの指定。時間帯（昼/夜）、光源（太陽光/電灯/月明かり）、雰囲気（明るい/暗い/劇的な影）など。 }}" background_elements: "{{ 主な舞台設定、場所の具体的な描写、配置されている重要な小物や環境要素。 }}" dialogue_bubbles: "Standard white bubbles for speech, thought clouds for internal thoughts, dashed bubbles for whispers, and rectangular boxes for narration/monologue. {{ 必要であれば特殊な吹き出しの定義を追加（例：叫び用のトゲトゲ吹き出し等） }}" visual_effects: "{{ 漫画的な視覚効果の指定。漫符（汗、血管、キラキラ）、エフェクト線（集中線、スピード線、震え線）、擬音の視覚化など。 }}" Characters: # キャラクターの定義。IDは英数字推奨。 {{ キャラクターID_1 }}: description: "{{ 外見、髪型、色、服装、特徴的なアイテム、性格や表情の傾向。参照画像がある場合はファイル名をここに記述（例：image_0.png参照）。 }}" {{ キャラクターID_2 }}: description: "{{ 二人目のキャラクター詳細... 人数分記述する。 }}" # 必要に応じて追加... Storyboard: # 4段構成のコマ割り定義 Tier_1: {{ コマID_T1_P1 (例: Panel_1_Large_Top) }}: scene: "{{ このコマの具体的な状況描写。誰が、どこで、何をしているか。構図やカメラワークの指定も可能。 }}" dialogue: - speaker: "{{ 話者のキャラクターID }}" type: "{{ 台詞の種類: speech(通常), thought(思考), whisper(囁き), shout(叫び), monologue(独白/ナレーション) }}" text: "{{ 台詞の具体的な内容。改行が必要な場合は \n を使用。 }}" # 同じコマ内で複数の台詞がある場合はリストを追加 # - speaker: "..." # type: "..." # text: "..." # Tier_1にコマを追加する場合はここに記述 Tier_2: {{ コマID_T2_P1 }}: scene: "{{ シーン詳細 }}" dialogue: - speaker: "{{ 話者ID }}" type: "{{ 種類 }}" text: "{{ 内容 }}" # 必要に応じてコマを追加 Tier_3: {{ コマID_T3_P1 }}: scene: "{{ シーン詳細 }}" dialogue: - speaker: "{{ 話者ID }}" type: "{{ 種類 }}" text: "{{ 内容 }}" # 必要に応じてコマを追加 Tier_4: {{ コマID_T4_P1 }}: scene: "{{ シーン詳細 }}" dialogue: - speaker: "{{ 話者ID }}" type: "{{ 種類 }}" text: "{{ 内容 }}" # 必要に応じてコマを追加

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Common Questions

Nano Banana Pro is Google's latest multimodal AI model featuring multimodal understanding (text, images, and video), high-quality generation from photorealistic to artistic styles, fast iteration with quick edits and variations, diverse styles from pixel art to oil paintings, precise control over composition and lighting, and complex multi-object, multi-character scene rendering.
They are curated mainly from public Twitter/𝕏 sources. If you are the author and wish to opt out, please contact us for immediate removal.
Simply copy the prompt and use it in YouMind with the 'Nano Banana Pro' image generation model according to the description. We are working on a tighter integration for one-click usage in the future.
It helps you consolidate your content creation and learning best practices into YouMind Shortcuts. This enables one-click generation based on your materials—like turning a YouTube video into a blog post or extracting quotes from an article.
Check out our blog post Nano Banana Pro Hands-On: 10 Mind-Blowing Real-World Cases for more curated Nano Banana Pro examples.

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