【米之ラン】星降る夜、幻想遺跡での冒険

オリジナルキャラ「米之ラン」が、複数の月と煌めく星空、光の粒子が舞う古代遺跡の前に佇む幻想的なイラスト。緑のパーカーと瞳が、神秘的な世界に溶け込むようです。
📥 オリジナル画像をダウンロード

上記イラストを作成した際のプロンプトです。
※NanobananaPro を使用しています。
※下記に要素ごとに分解したプロンプトも記載していますので、自由に組み替えてご利用ください。
{
  "meta": {
    "image_quality": "High",
    "image_type": "Illustration"
  },
  "global_context": {
    "scene_description": "Anime-style illustration of a young girl standing in a luminous, otherworldly meadow with ruins and tall rock pillars in the midground and a vivid starry sky with two visible moons. Foreground flora and glowing particles surround the figure; distant ruins and haze blend into a bright horizon. The composition mixes fantasy landscape and character portrait elements.",
    "time_of_day": "Dawn/dusk (magical twilight)",
    "weather_atmosphere": "Clear, ethereal, serene",
    "lighting": {
      "source": "Mixed (ambient celestial + distant horizon sunlight)",
      "direction": "Backlit with frontal soft fill",
      "quality": "Diffused, glowy",
      "color_temp": "Cool with warm horizon accents"
    }
  },
  "color_palette": {
    "dominant_hex_estimates": ["#0F2A4A","#87D3FF","#FFD59A"],
    "accent_colors": ["emerald green","lavender"],
    "contrast_level": "High"
  },
  "composition": {
    "camera_angle": "Eye-level",
    "framing": "Medium-shot (waist up, centered)",
    "depth_of_field": "Deep (foreground and background details visible with soft haze)",
    "focal_point": "Girl (center) with illuminated hair and green eyes"
  },
  "objects": [
    {
      "id": "obj_001",
      "label": "Young girl",
      "category": "Character",
      "location": "Center",
      "prominence": "Foreground",
      "visual_attributes": {
        "color": "White hair, green eyes, white+green hoodie, black skirt, pale skin",
        "texture": "Smooth anime-style skin, soft hair shading, fabric matte",
        "material": "Cloth (hoodie, skirt)",
        "state": "Clean, new",
        "dimensions_relative": "Medium (occupies central vertical third)"
      },
      "micro_details": [
        "four-leaf clover emblem on hoodie chest",
        "hairclip (green) on left hair",
        "subtle rim light around hair",
        "soft blush on cheeks"
      ],
      "pose_or_orientation": "Standing, hands relaxed at sides, facing slightly to viewer's right",
      "text_content": null
    },
    {
      "id": "obj_002",
      "label": "Starry sky",
      "category": "Background element",
      "location": "Top half",
      "prominence": "Background",
      "visual_attributes": {
        "color": "Deep blues, teals, purples with bright star specks and nebula-like gradients",
        "texture": "Diffuse nebula glow, sharp star points",
        "material": null,
        "state": "Clear",
        "dimensions_relative": "Large, spans full width"
      },
      "micro_details": [
        "two moons (one larger, one smaller) upper-right",
        "multicolored light streaks and particle flares"
      ],
      "pose_or_orientation": null,
      "text_content": null
    },
    {
      "id": "obj_003",
      "label": "Ruins / rock pillars",
      "category": "Architecture/Natural",
      "location": "Midground (left and right)",
      "prominence": "Midground",
      "visual_attributes": {
        "color": "Muted grays, moss green",
        "texture": "Rough stone, weathered, overgrown",
        "material": "Stone",
        "state": "Ruined, moss-covered",
        "dimensions_relative": "Tall relative to frame"
      },
      "micro_details": [
        "arched ruins right midground",
        "vertical pillar silhouettes left"
      ],
      "pose_or_orientation": "Vertical, some tilted",
      "text_content": null
    },
    {
      "id": "obj_004",
      "label": "Flora and meadow",
      "category": "Vegetation",
      "location": "Foreground and lower frame",
      "prominence": "Foreground",
      "visual_attributes": {
        "color": "Greens, purples, pinks, soft blues",
        "texture": "Lush grass, delicate flowers, dew-like sparkles",
        "material": "Plants",
        "state": "Healthy, glowing",
        "dimensions_relative": "Low, spreads across bottom"
      },
      "micro_details": [
        "glowing pollen-like particles",
        "individual flower clusters with slight bloom"
      ],
      "pose_or_orientation": null,
      "text_content": null
    }
  ],
  "text_ocr": {
    "present": false,
    "content": []
  },
  "semantic_relationships": [
    "Girl is centered in front of ruins",
    "Backlight from horizon creates rim light on girl and flora",
    "Starry sky visually frames girl's head",
    "Glowing particles surround both foreground and background elements"
  ]
}

画像参照部分
※ご使用のGUIによってはタグ参照が利用できる場合があります。GUIをお使いの場合は、そのフォーマットに従ってください。
image1 is base character

下記のJSONプロンプトを組み合わせる際、冒頭に付けると効果的なプロンプトです。
Please generate a single illustration by integrating the following three JSON blocks: 1. Character Design, 2. Current State, and 3. Environment.

キャラクターの外見要素（固定デザイン）
下記プロンプトを使用すると、似たキャラクターを再現できます。
{
  "character_concept": {
    "label": "Anime-style young girl (White hair / Green eyes)",
    "visual_attributes": {
      "color": "White hair, green eyes, pale skin, white and green hoodie, black skirt.",
      "texture": "Smooth anime-style skin, soft hair shading, matte fabric.",
      "material": "Cloth (hoodie, skirt), hair, skin.",
      "state": "Clean, new.",
      "dimensions_relative": "Medium (occupies central vertical third)"
    },
    "design_details": [
      "Green hairclip on left side of head.",
      "Four-leaf clover emblem on hoodie chest.",
      "White hoodie with green accents."
    ]
  }
}

キャラクターの変化要素（ポーズ・表情）
下記プロンプトを使用すると、似たポーズや表情を再現できます。
{
  "current_state": {
    "pose_or_orientation": "Standing, hands relaxed at sides, facing slightly to viewer's right.",
    "expression_details": [
      "Soft blush on cheeks.",
      "Serene, calm expression.",
      "Gaze directed slightly off-center."
    ]
  }
}

環境・その他の要素（背景・照明・画風）
下記プロンプトを使用すると、似た雰囲気のイラストを作ることができます。
{
  "global_context": {
    "scene_description": "A luminous, otherworldly meadow with ruins and tall rock pillars in the midground. The sky is vivid and starry with two visible moons. Glowing particles and flora surround the figure, creating a serene, ethereal atmosphere.",
    "time_of_day": "Dawn/dusk (magical twilight)",
    "lighting": {
      "source": "Mixed (ambient celestial + distant horizon sunlight)",
      "direction": "Backlit with frontal soft fill",
      "quality": "Diffused, glowy, rim lighting",
      "color_temp": "Cool with warm horizon accents"
    }
  },
  "composition": {
    "camera_angle": "Eye-level",
    "framing": "Medium-shot (waist up, centered)",
    "depth_of_field": "Deep (foreground and background details visible with soft haze)"
  },
  "environment_objects": [
    {
      "label": "Starry sky & Two Moons",
      "visual_attributes": {
        "color": "Deep blues, teals, purples, bright star specks",
        "texture": "Diffuse nebula glow, sharp star points",
        "material": "Celestial body",
        "state": "Clear, starry",
        "dimensions_relative": "Large background expanse"
      }
    },
    {
      "label": "Ruins / Rock pillars",
      "visual_attributes": {
        "color": "Muted grays, moss green",
        "texture": "Rough stone, weathered, overgrown",
        "material": "Stone",
        "state": "Ruined, moss-covered, vertical",
        "dimensions_relative": "Tall midground elements"
      }
    },
    {
      "label": "Flora and meadow",
      "visual_attributes": {
        "color": "Greens, purples, pinks, soft blues",
        "texture": "Lush grass, delicate flowers, dew-like sparkles",
        "material": "Vegetation",
        "state": "Healthy, glowing",
        "dimensions_relative": "Foreground spread"
      }
    }
  ]
}


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