【米之ラン】夜更かし？机でうたた寝

夜の部屋で、オリジナルキャラクター「米之ラン」が机に突っ伏して眠る様子。都会の夜景を背景に、青い光が差し込む静かな空間。描きかけのスケッチブックが彼女の努力を物語っています。
📥 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": "Bedroom/dorm room at dusk with a young girl asleep at a desk strewn with drawing supplies, snacks and books. City skyline visible through two windows; interior lit by cool blue evening light with a warm purple horizon. Bed to right, floor cluttered with wrappers and a water bottle.",
    "time_of_day": "Dusk / Early evening",
    "weather_atmosphere": "Clear",
    "lighting": {
      "source": "Ambient city light + window moon/sunset mixed",
      "direction": "Left-to-right window light with soft top fill",
      "quality": "Soft / Diffused",
      "color_temp": "Cool (blue) with warm purple accent"
    }
  },
  "color_palette": {
    "dominant_hex_estimates": ["#0E3B6A","#2A75B8","#93D6FF"],
    "accent_colors": ["Purple","Mint green"],
    "contrast_level": "Medium"
  },
  "composition": {
    "camera_angle": "Eye-level",
    "framing": "Medium-shot (desk and upper body)",
    "depth_of_field": "Deep (most elements in focus)",
    "focal_point": "Sleeping girl leaning on desk"
  },
  "objects": [
    {
      "id": "obj_001",
      "label": "Girl",
      "category": "Person",
      "location": "Center-right",
      "prominence": "Foreground",
      "visual_attributes": {
        "color": "Pale skin, white hair, mint-green hoodie with white sleeves, dark skirt",
        "texture": "Smooth skin, soft fabric hoodie",
        "material": "Fabric/skin",
        "state": "Sleeping",
        "dimensions_relative": "Medium (occupies large central area)"
      },
      "micro_details": [
        "Short bob hair with hairpin (cross-shaped)",
        "Light blush on cheeks",
        "Pencil indent on open sketchbook under head",
        "Fold creases on hoodie sleeve"
      ],
      "pose_or_orientation": "Seated, leaning forward, head on folded arms",
      "text_content": null
    },
    {
      "id": "obj_002",
      "label": "Desk",
      "category": "Furniture",
      "location": "Center-left to center",
      "prominence": "Foreground",
      "visual_attributes": {
        "color": "Wood brown with blue light cast",
        "texture": "Smooth wood grain visible",
        "material": "Wood",
        "state": "Used, cluttered",
        "dimensions_relative": "Large relative to frame"
      },
      "micro_details": [
        "Open sketchbook with character drawings",
        "Pencil, eraser, USB cable, earphones coiled",
        "Two snack packets, one opened",
        "Light dust particles in beam"
      ],
      "pose_or_orientation": "Flat horizontal surface",
      "text_content": null
    },
    {
      "id": "obj_003",
      "label": "Books and folders",
      "category": "Objects",
      "location": "Left on desk and windowsill",
      "prominence": "Foreground/near-background",
      "visual_attributes": {
        "color": "Muted greens, blues, beige",
        "texture": "Paper/cardboard",
        "material": "Paper",
        "state": "Stacked, upright",
        "dimensions_relative": "Tall narrow relative to desk"
      },
      "micro_details": [
        "Visible spine text illegible sketches on visible pages",
        "Bookend holding upright"
      ],
      "pose_or_orientation": "Stacked/standing",
      "text_content": null
    },
    {
      "id": "obj_004",
      "label": "Window / City skyline",
      "category": "Architecture",
      "location": "Background left and center",
      "prominence": "Background",
      "visual_attributes": {
        "color": "Deep blue, purple horizon, lit windows in buildings",
        "texture": "Smooth glass, silhouetted buildings",
        "material": "Glass/Concrete",
        "state": "Clear view",
        "dimensions_relative": "Large background element"
      },
      "micro_details": [
        "Star-like specks in beam, distant illuminated windows",
        "Curtains partly drawn"
      ],
      "pose_or_orientation": "Vertical panes"
    },
    {
      "id": "obj_005",
      "label": "Bed",
      "category": "Furniture",
      "location": "Right background",
      "prominence": "Background",
      "visual_attributes": {
        "color": "Blue sheets, darker pillow",
        "texture": "Wrinkled fabric",
        "material": "Fabric/foam mattress",
        "state": "Unmade",
        "dimensions_relative": "Medium"
      },
      "micro_details": [
        "Blanket folds, slight shadowing from window light",
        "Box and items under bed"
      ],
      "pose_or_orientation": "Horizontal"
    },
    {
      "id": "obj_006",
      "label": "Floor clutter",
      "category": "Objects",
      "location": "Bottom-right",
      "prominence": "Background/secondary",
      "visual_attributes": {
        "color": "Mixed wrappers (red, white), clear plastic bottle",
        "texture": "Crinkled plastic",
        "material": "Plastic/paper",
        "state": "Scattered",
        "dimensions_relative": "Small items"
      },
      "micro_details": [
        "Open snack bag, discarded wrapper edges",
        "Bottle cap near baseboard"
      ],
      "pose_or_orientation": "Scattered"
    }
  ],
  "text_ocr": {
    "present": false,
    "content": []
  },
  "semantic_relationships": [
    "Girl resting head on desk (obj_001 on obj_002)",
    "Desk items (obj_002) arranged toward window (obj_004)",
    "Window light casts blue illumination across girl and desk",
    "Bed (obj_005) adjacent to desk, floor clutter (obj_006) near bed"
  ]
}

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": "Young girl (White hair / Mint hoodie)",
    "visual_attributes": {
      "color": "Pale skin, white hair, mint-green hoodie with white sleeves, dark skirt",
      "texture": "Smooth skin, soft fabric hoodie, silky hair",
      "material": "Fabric (cotton mix), hair, skin",
      "state": "Casual wear, clean",
      "dimensions_relative": "Medium (young girl stature)"
    },
    "design_details": [
      "Short bob haircut",
      "Cross-shaped hairpin on side of head",
      "Mint-green hoodie with distinct white sleeves",
      "Dark pleated skirt"
    ]
  }
}

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": "Seated at desk, leaning forward, head resting on folded arms over an open sketchbook.",
    "expression_details": [
      "Sleeping face",
      "Eyes closed",
      "Light blush on cheeks",
      "Relaxed features pressed slightly against paper"
    ]
  }
}

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": "Bedroom/dorm room at dusk. A desk strewn with drawing supplies and snacks sits against a window revealing a city skyline with a warm purple horizon. Cool blue evening light fills the room.",
    "time_of_day": "Dusk / Early evening (Blue hour)",
    "lighting": {
      "source": "Ambient city light + window light (mixed natural/artificial)",
      "direction": "Left-to-right window light with soft top fill",
      "quality": "Soft, diffused, atmospheric",
      "color_temp": "Cool blue dominant with warm purple horizon accents"
    }
  },
  "composition": {
    "camera_angle": "Eye-level",
    "framing": "Medium-shot (focus on desk and upper body)",
    "depth_of_field": "Deep (foreground desk items and background city visible)"
  },
  "environment_objects": [
    {
      "label": "Cluttered Desk",
      "visual_attributes": {
        "color": "Wood brown with blue light cast",
        "texture": "Smooth wood grain, paper texture of sketchbook",
        "material": "Wood, paper, plastic",
        "state": "Messy, used, covered in drawing supplies (pencil, eraser, USB cable) and snacks",
        "dimensions_relative": "Large foreground surface"
      }
    },
    {
      "label": "Window & City Skyline",
      "visual_attributes": {
        "color": "Deep blue sky, purple horizon, yellow city lights",
        "texture": "Glass reflection, distant concrete silhouettes",
        "material": "Glass, concrete",
        "state": "Clear view, curtains partly drawn",
        "dimensions_relative": "Large background expanse"
      }
    },
    {
      "label": "Bed",
      "visual_attributes": {
        "color": "Blue sheets, dark pillow",
        "texture": "Wrinkled fabric",
        "material": "Textile",
        "state": "Unmade, shadowed",
        "dimensions_relative": "Medium background element (right)"
      }
    },
    {
      "label": "Floor clutter",
      "visual_attributes": {
        "color": "Red/white wrappers, clear plastic bottle",
        "texture": "Crinkled plastic",
        "material": "Plastic, waste",
        "state": "Scattered on floor",
        "dimensions_relative": "Small details"
      }
    }
  ]
}


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