Nano Banana Proで遊ぼう
【参戦画面プロンプト】
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スパロボバトル演出化プロンプト（リプ欄）に続く、楽しいプロンプトができました。ぜひお気に入りのキャラで遊んでみてください。公開時はわたしのプロンプトであることをひとこと添えていただけると嬉しいです。
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参照画像のキャラクターの「参戦画面」を生成するプロンプトです。
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※Nano Banana Pro専用のプロンプトです。
※アスペクト比は16:9で最適化しています。
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◆使い方
下記ブロックの「""」内を任意の文字列に書き換えてください。
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text:
  character_name: "キャラクター名"
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"参戦!!"も任意の文字列に書き換えられるので汎用性が高いと思います。
背景は参照画像の雰囲気を推論して描かれます。
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◆プロンプト
layering:
  order:
    - text_layer
    - character_layer
    - background_layer
  strict: true

subject:
  description: >
    Preserve the subject exactly as in the reference image, keeping all facial features,
    colors, hairstyle, clothing, and proportions. No redesign or reinterpretation.
  framing: >
    Bust-up composition (head to upper torso), making the subject appear large and prominent.
  integrity: full_identity_preservation
  detail_level: ultra_high_resolution
  micro_details: preserve_skin_texture_hair_edges_fabric_details

composition:
  aspect_ratio: "16:9"
  layout: >
    Subject positioned on one side; headline text on the opposite side.
  emphasis: >
    Strong presence on the character's upper body and expression.

action:
  description: >
    Minimal motion enhancement. Maintain the reference pose while adding subtle dramatic energy.

location:
  description: >
    Generate a simple, abstract background inferred from the tone of the reference image.
    No specific elements required; allow the model to interpret color and atmosphere freely.
    Background must NOT contain any characters, silhouettes, faces, bodies,
    or blurred forms derived from the subject.
  background_feel: clean_and_minimal
  allowed_elements: pure_color_gradients_light_abstract_shapes_only
  prohibit_subject_reuse_in_background: true

style:
  visual_style: >
    High-impact reveal-splash aesthetic with strong contrast between character and headline.
  text_effects: >
    Metallic, high-energy lettering with pronounced depth and perspective. No glow effects.
  character_rendering: >
    Extremely high-resolution rendering with sharp facial details, clean hair definition,
    precise edges, and crisp texture fidelity.
  background_style_rules: >
    Background must be purely non-figurative. No silhouettes, no blurred shapes,
    and no reused subject elements.
  ink_splash_rules: >
    Ink splash must be pure black only. No other colors, tinting, blending, or variation.

camera_lighting:
  camera_angle: from_reference
  lighting: >
    Enhance with dramatic key lighting and subtle rim highlights to emphasize the reveal.
  clarity: maximum_definition

colors:
  palette: >
    Background colors inferred from the reference image.
    Character name in metallic silver; announcement text in saturated yellow.
  mood: dramatic, heroic, high_energy

text:
  character_name: "キャラクター名"
  announcement_fixed: "参戦!!"
  placement: opposite_side_of_character
  perspective: >
    Pronounced perspective: front surface larger, back tapered with visible extrusion.
  character_name_style: >
    Metallic silver, brushed-metal texture, subtle bevel, no glow.
  announcement_style: >
    Yellow fill, thick black outline, soft white inner edge.
  ink_splash:
    color: pure_black
    restrict_to_color: pure_black_only
    shape: ink_brush_texture
    placement: behind_text_only
    no_color_variation: true

edit_instructions:
  background_layer: >
    Generate the background first as a clean, abstract inferred color field.
    It must contain no character shapes, silhouettes, or blurred forms.
  character_layer: >
    Render the character on top of the background with highest resolution and sharp edges.
  text_layer: >
    Render the character name and announcement as the topmost layer above the character.
    Apply pure black ink-splash behind the text only.
  enforce_layer_order: true
  preserve_character_fully: true
  crop: bust_up
  enhance_character_details: true
  preserve_texture_fidelity: true
  no_glow_on_character_name: true
  enforce_black_ink_splash: true
  forbid_nonblack_ink_colors: true
  forbid_subject_in_background: true
  forbid_blurred_character_in_background: true
  background_must_be_nonfigurative: true
  background_cannot_reference_or_reuse_subject: true

references:
  A: "Main character reference image for perfect preservation."
  B: "Optional reference for metallic lettering or color mood."

extras:
  quality: ultra
  resolution: 4k
  fidelity: high
  sharpness: maximum
  output_intent: reveal_splash