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

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" # Change as needed (e.g., "1:1", "16:9")
resolution: "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: >
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

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.

How to use this prompt

Copy the prompt above and paste it into an AI image generator such as Google Gemini (Nano Banana) or a similar tool. Replace any bracketed placeholders with your own details, then generate and refine the result.

This prompt is designed to work with a reference photo. Upload your own photo (only one you have the right to use) together with the prompt.

Prompt collection credit: YouMind Awesome Nano Banana Pro Prompts (CC BY 4.0). Credit to the original prompt creators. To request removal of a prompt or image, please contact us.

Written by S NAR

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