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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.

March 1, 2026 Source: Nano Banana Pro Prompts by Community
YAML Template for Web Manga Creation using Gemini (Nano Banana Pro)

Generated result using this prompt

The 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: "{argument name="aspect ratio" default="2:3"}" # Change as needed (e.g., "1:1", "16:9")
resolution: "{argument name="resolution" default="2K"}"    # Change as needed (e.g., "4K")
Character_Count: {{ Total number of characters appearing }}
Total_Panel_Count: {{ Total number of panels (usually 4-8 for a 4-tier structure) }}

Summary: >
  {argument name="summary" default="Overall summary of the story. Briefly describe the plot flow, setting, main events, and conclusion."}

Style_Guide:
  # Panel division style is fixed to "no outer frame, display to canvas edge"
  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: "{{ Specify lighting. Time of day (day/night), light source (sunlight/electric light/moonlight), atmosphere (bright/dark/dramatic shadows), etc. }}"
  background_elements: "{{ Main setting, specific description of the location, important props or environmental elements placed. }}"
  dialogue_bubbles: "Standard white bubbles for speech, thought clouds for internal thoughts, dashed bubbles for whispers, and rectangular boxes for narration/monologue. {{ Add definitions for special speech bubbles if necessary (e.g., spiky bubbles for shouting) }}"
  visual_effects: "{{ Specify manga visual effects. Manga symbols (sweat, veins, sparkle), effect lines (concentration lines, speed lines, tremor lines), visualization of sound effects, etc. }}"

Characters:
  # Character definition. Alphanumeric IDs recommended.
  {{ Character ID_1 }}:
    description: "{{ Appearance, hairstyle, color, clothing, distinctive items, personality and expression tendencies. If reference images exist, write the file name here (e.g., reference image_0.png). }}"
  {{ Character ID_2 }}:
    description: "{{ Second character details... Describe for the number of characters. }}"
  # Add as needed...

Storyboard:
  # 4-tier panel division definition
  Tier_1:
    {{ Panel ID_T1_P1 (e.g., Panel_1_Large_Top) }}:
      scene: "{{ Specific situation description for this panel. Who, where, and what they are doing. Composition and camera work can also be specified. }}"
      dialogue:
        - speaker: "{{ Speaker's Character ID }}"
          type: "{{ Type of line: speech(normal), thought(thought), whisper(whisper), shout(shout), monologue(monologue/narration) }}"
          text: "{{ Specific content of the line. Use \n if a line break is needed. }}"
        # Add list if there are multiple lines in the same panel
        # - speaker: "..."
        #   type: "..."
        #   text: "..."
    # Write here to add panels to Tier_1
  Tier_2:
    {{ Panel ID_T2_P1 }}:
      scene: "{{ Scene details }}"
      dialogue:
        - speaker: "{{ Speaker ID }}"
          type: "{{ Type }}"
          text: "{{ Content }}"
    # Add panels as needed
  Tier_3:
    {{ Panel ID_T3_P1 }}:
      scene: "{{ Scene details }}"
      dialogue:
        - speaker: "{{ Speaker ID }}"
          type: "{{ Type }}"
          text: "{{ Content }}"
    # Add panels as needed
  Tier_4:
    {{ Panel ID_T4_P1 }}:
      scene: "{{ Scene details }}"
      dialogue:
        - speaker: "{{ Speaker ID }}"
          type: "{{ Type }}"
          text: "{{ Content }}"
    # Add panels as needed

Parameters

aspect_ratio

16:9

quality

high

About This Prompt

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 Details

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: “{argument name=“aspect ratio” default=“2:3”}” # Change as needed (e.g., “1:1”, “16:9”) resolution: “{argument name=“resolution” default=“2K”}” # Change as needed (e.g., “4K”) Character_Count: {{ Total number of characters appearing }} Total_Panel_Count: {{ Total number of panels (usually 4-8 for a 4-tier structure) }}

Summary: > {argument name=“summary” default=“Overall summary of the story. Briefly describe the plot flow, setting, main events, and conclusion.”}

Style_Guide:

Panel division style is fixed to “no outer frame, display to canvas edge”

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: ”{{ Specify lighting. Time of day (day/night), light source (sunlight/electric light/moonlight), atmosphere (bright/dark/dramatic shadows), etc. }}” background_elements: ”{{ Main setting, specific description of the location, important props or environmental elements placed. }}” dialogue_bubbles: “Standard white bubbles for speech, thought clouds for internal thoughts, dashed bubbles for whispers, and rectangular boxes for narration/monologue. {{ Add definitions for special speech bubbles if necessary (e.g., spiky bubbles for shouting) }}” visual_effects: ”{{ Specify manga visual effects. Manga symbols (sweat, veins, sparkle), effect lines (concentration lines, speed lines, tremor lines), visualization of sound effects, etc. }}”

Characters:

Character definition. Alphanumeric IDs recommended.

{{ Character ID_1 }}: description: ”{{ Appearance, hairstyle, color, clothing, distinctive items, personality and expression tendencies. If reference images exist, write the file name here (e.g., reference image_0.png). }}” {{ Character ID_2 }}: description: ”{{ Second character details… Describe for the number of characters. }}“

Add as needed…

Storyboard:

4-tier panel division definition

Tier_1: {{ Panel ID_T1_P1 (e.g., Panel_1_Large_Top) }}: scene: ”{{ Specific situation description for this panel. Who, where, and what they are doing. Composition and camera work can also be specified. }}” dialogue: - speaker: ”{{ Speaker’s Character ID }}” type: ”{{ Type of line: speech(normal), thought(thought), whisper(whisper), shout(shout), monologue(monologue/narration) }}” text: ”{{ Specific content of the line. Use \n if a line break is needed. }}” # Add list if there are multiple lines in the same panel # - speaker: ”…” # type: ”…” # text: ”…” # Write here to add panels to Tier_1 Tier_2: {{ Panel ID_T2_P1 }}: scene: ”{{ Scene details }}” dialogue: - speaker: ”{{ Speaker ID }}” type: ”{{ Type }}” text: ”{{ Content }}” # Add panels as needed Tier_3: {{ Panel ID_T3_P1 }}: scene: ”{{ Scene details }}” dialogue: - speaker: ”{{ Speaker ID }}” type: ”{{ Type }}” text: ”{{ Content }}” # Add panels as needed Tier_4: {{ Panel ID_T4_P1 }}: scene: ”{{ Scene details }}” dialogue: - speaker: ”{{ Speaker ID }}” type: ”{{ Type }}” text: ”{{ Content }}” # Add panels as needed

Sample Image

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


Source: Nano Banana Pro Prompts Library | ID: 7012

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Prompt Info

Type image
Model Nano Banana
Added 3/1/2026

Tags

Nano Banana Comic Storyboard Anime Manga Drama

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