はじめに
生成AIを使って、理想的な美少女やグラビア美女のイラストを描きたいと考えているフリーランスやイラストレーターの皆さんへ。本記事では、Midjourneyをはじめとする生成AIツールを駆使して、魅力的なキャラクターを作成するためのプロンプト集を紹介します。SEOキーワード「グラビア美女」「美少女」「生成AI」「Midjourney」を冒頭に含め、効果的なプロンプトの使い方とイラスト制作の可能性を徹底解説します。
生成AIを活用した理想の美女制作が可能性を引き出す
生成AIツールは、従来のデジタルアート制作に比べて、作業時間を大幅に短縮し、より多彩な表現を可能にする画期的な技術です。特に美少女キャラクターやグラビア美女といった複雑な表現には、その真価を発揮します。ここでは、生成AIを活用することで得られるメリットと、その可能性を探ります。
フリーランスやイラストレーターにとってのメリット
AIと人間が協働することで、イラスト制作において新しい可能性が広がります。特にフリーランスやイラストレーターの方は、生成AIの力を借りてラフ案を短時間で量産し、細部の修正を人間が行うことで、質の高いイラストが完成します。メリットは大きく以下の３つあります。
- イラスト制作の効率化：複雑な構図やポーズもプロンプトによって瞬時に表現可能。作業時間の短縮とアイデア出しのサポートを実現。
- 多様なスタイルの表現：生成AIは様々なアートスタイルやトーンを取り入れることができ、従来の手描きでは難しい新しいアート表現が可能。
- 独自性の高いキャラクター設定：生成AIは入力するプロンプトによって異なる個性を持つキャラクターを次々と生み出すことができるため、クリエイターが多様なキャラクターを開発する上で有効。
Midjourneyの始め方
Midjourney（ミッドジャーニー）は、テキストベースのプロンプトを使ってAIが美しい画像を生成するツールです。特に美女や魅力的な人物を描くのに優れており、クリエイティブなプロジェクトに最適です。写真のようにリアルな表現から、幻想的なアートスタイルまで、幅広いビジュアルを簡単に作成できます。
Midjourneyの始め方については、過去記事の「画像生成AI「Midjourney」の始め方をイチから解説」で詳しく解説していますので、Midjourneyをイチから始めてみたいという方は、ぜひご一読ください。また、「ミッドジャーニーのコマンド一覧、コマンドの使い方まとめ」では、Midjourneyの細かい使い方を説明していますので、こちらも合わせてご覧いただくとよいです。
美少女＆グラビア美女を生成する際の基礎知識
生成AIで美少女やグラビア美女を作成する際は、以下の基本要素を理解しておくことが重要です。
プロンプトの基本構成要素
プロンプトを作成する際の基本構成要素は以下の４つです。AI生成イラストでは、細かい部分の調整が難しいことや、時折不自然な表現が出ることがあります。これを回避するために、プロンプトを試行錯誤し、繰り返し調整することが求められます。
- キャラクター設定： キャラクターの年齢、性格、体型などを設定し、プロンプトに組み込みます。
- 例：「young girl, energetic, slim body, big eyes」
- ポーズ設定： 座っている、立っている、歩いているなど、動きやポーズを具体的に指定することで、キャラクターに躍動感を与えます。
- 例：「standing pose, one hand on hip, smiling」
- 表情の設定： キャラクターの感情を表す表情もプロンプトで指定できます。
- 例：「happy face, smiling, bright eyes」
- 背景やシチュエーションの設定： キャラクターを引き立てる背景やシチュエーションを指定することで、より印象的なイラストを作成できます。
- 例：「background: night cityscape, neon lights」
魅力的な美少女を生成するプロンプトテンプレート
使用したプロンプトはこちら▼
＜prompt＞
A 4K Instagram-worthy half-body photograph capturing a beautiful Korean girl with a perfect oval face, large expressive eyes, a gentle smile, and flawless, fair skin with a radiant, dewy glow. She is dressed in an elegant Korean school uniform, sitting by a sunlit window in a high school classroom. The image is taken from a slight side angle, showcasing the incredible detail of her luminous skin as she attentively focuses on her textbook, not looking at the camera. The bright sunlight streaming through the window casts a warm, natural light on her, enhancing the serene and dreamy mood. In the background, other students are casually going about their studies, adding to the authentic classroom atmosphere. The girl's delicate features, perfect oval face, and the classroom details create a perfect blend of realism and aesthetic charm
使用したプロンプトはこちら▼
＜prompt＞
a beautiful and tall Japanese high school girl who have great figure with smiling, Kitesurfing. First person view of the kite. The kite is two-colored: yellow and blue against the blue sky and sea. Light feather clouds. --ar 11:16 --v 6.1
使用したプロンプトはこちら▼
＜prompt＞
A female high school student stands in front of a building, wearing a traditional school uniform with a white blouse and blue skirt. She carries a school bag slung over her shoulder and holds a couple of books in her arm. Her ID tag is visible, and she has shoulder-length hair. The setting is outside the school building, which can be seen in the background. The scene is drawn in anime-style illustration, with a detailed focus on the character and the structure behind her. The building is depicted in a European-style with a cozy, inviting feel, surrounded by vibrant autumn foliage. The setting sun casts a warm glow on the building, adding an atmosphere of calm and serenity, An ultra-detailed, charming European-style cafe storefront surrounded by vibrant autumn foliage. image in anime-style illustrations. The cafe has an inviting, cozy feel with a rustic black exterior, highlighted by the bright orange canvas awning above the door, on which the name 'Artifex Cafe' is elegantly written in golden serif letters. The large glass windows and door reflect the warm glow of the interior lights, with soft ambient light filtering through the café, creating a welcoming atmosphere. Outside, the cobblestone street is partially covered by fallen leaves in shades of bright orange, red, and yellow, complementing the crisp autumn air. The surrounding trees, with their vividly colored fall leaves, stretch overhead, their branches framing the top of the image, adding a natural contrast to the man-made structure. Sunlight glints through the leaves, casting a dappled, golden light across the front of the café, while subtle shadows dance on the cobblestones below. The cafe itself has a quaint, artisanal feel, with small tables and chairs set outside for guests. A black chalkboard menu stands beside the entrance, written in chalky white script, displaying the day's offerings. The café windows are lined with soft golden lights hanging inside, and you can catch a glimpse of the cozy interior, filled with shelves of books, coffee cups, and pastries. The glass windows and door are slightly reflective, showing the shiny, polished surfaces of the café's exterior, contrasting the rougher, textured stone walls around the building. The entire scene is rendered in Ultra-HD, with sharp focus on the tiniest details, like the subtle shine on the windows, the rich texture of the cobblestones, and the intricate veins of the autumn leaves. The sunlight and shadows create a serene, peaceful autumn vibe, with the environment exuding warmth and a sense of calm. Add light rain, creating subtle reflections on the cobblestones, and a slight mist in the air to give it a romantic, rainy-day atmosphere. Modify the scene to show the cafe during sunset, with a golden-orange glow casting longer shadows and more vibrant hues on the autumn leaves. Add a cyclist parked near the café, enhancing the urban yet tranquil setting. Change the awning color to a deep burgundy red for a more sophisticated and cozy look. Soft, warm lighting with sunlight filtering through the leaves; optional light rain variation for reflective surfaces Details: High emphasis on textures (the roughness of the stone walls, the shine on the glass windows, and the crunchiness of the leaves) Shine: Add a subtle, glossy finish to reflective surfaces like the glass windows and the wet cobblestones in the rainy variation Theme: Quaint, cozy European cafe with a rustic feel and vibrant autumn setting. --ar 16:9 --quality 2 --style raw --stylize 750 --v 6.1
使用したプロンプトはこちら▼
＜prompt＞
A female junior high school student wearing a school uniform is sitting on a stool at a classroom desk and smiling at the camera. This is a full-face photo centered on the desk, noting that the book on the girl's desk can be seen, modern style, classroom background, full HD. Based on augmented Reality technology 800:800, home bar of luxury stone and shingle style Maine cottage on the coast with with views of tall pine trees --ar 9:16 --v 6.1
使用したプロンプトはこちら▼
＜prompt＞
A realistic, DSLR-photographed scene of a 16-year-old Chinese high school girl standing at the front of a spacious classroom, pointing confidently at a large, clean blackboard during a presentation. The blackboard dominates the background, offering ample space for text or promotional content, with minimal chalk markings to add authenticity without clutter. The girl is dressed in a neat school uniform, with a white blouse and plaid skirt, exuding a studious yet approachable look. The scene captures her from a slight distance, showcasing the classroom environment with rows of empty desks subtly visible, emphasizing a clean and organized academic setting. The girl’s expression is focused and engaged, her posture dynamic as she explains a point on the blackboard. Her skin texture is realistic, with natural lighting accentuating her youthful complexion, showing subtle details such as soft hair strands and fine lines, enhancing the authenticity. The lighting is bright yet balanced, with natural sunlight pouring in from large windows, casting soft, diffused shadows that highlight the classroom’s clean and modern feel. The overall tone is warm and inviting, conveying an atmosphere of learning and enthusiasm. The background is slightly blurred, keeping the focus on the girl and the expansive blackboard, perfect for educational and motivational posters. The image is framed in a 9:16 aspect ratio, ideal for vertical displays, with sharp details and a realistic feel --ar 11:16 --quality 2 --style raw --v 6.1
使用したプロンプトはこちら▼
＜prompt＞
An 18-year-old Chinese female student, among the teachers at school, is wearing a pure white T-shirt, skirt, black shoulder length hair, and bangs, Best_quality,Masterpiece,Exquisite,Photorealistic, 1 Chinese girl, Beauty,Black_hair,teacher, in classroom, Standing on the podium, White shirt, Black skirt,full body, A charming Japanese animated style girl with mid-length brown hair wearing a flowing white dress, playing joyfully with a fluffy white sheep on lush green grass, vibrant colors, soft lines, whimsical atmosphere --ar 9:16 --v 6.1
使用したプロンプトはこちら▼
＜prompt＞
an ultra realistic photo of a high-school and primary school student standing in an elegant and regal dark blue and white school uniform infront of a school building smiling. They are dressed very proper, to escape from reality into a world of illusions and fantasies.--s 750 --ar 9:16 --v 6.1
使用したプロンプトはこちら▼
＜prompt＞
Close-up photo of collarbone of a young Korean lady, sunny, Japanese high school girls uniform, outdoor and other station platform --style raw --stylize 50 --v 6.1
使用したプロンプトはこちら▼
＜prompt＞
Female high school student, A Latina student in the classroom writing at her desk, wearing a white polo shirt and blue pants uniform, with a blurred background of the classroom and other students, The Female high school student, sitting up, reaches out with both hands to tickle the small white kitten and the little tiger cub, who are lying on their backs with their faces turned upwards. Both the kitten and the tiger cub wiggle joyfully in response to the baby's playful touch, creating a cute and heartwarming moment. This scene focuses on the baby's curiosity and the animals' adorable reactions, set in a warm and cozy indoor environment filled with soft, natural light --ar 11:16 --style raw --v 6.1
使用したプロンプトはこちら▼
＜prompt＞
Female high school student, Beautiful high school students in Japan, Stepping into this open living room feels like entering a minimalist art palace of Italian style. The spacious space features furniture with simple and smooth lines, primarily in white and gray tones, creating a tranquil and fresh atmosphere. The sofa is the focal point of the entire space, made from soft fabric with a simple design that is both comfortable and practical. Behind the sofa is a large floor-to-ceiling window, through which you can see the minimalist Italian landscape outside. In the garden beyond the window, lush trees provide shade, flowers bloom vibrantly, and sunlight filters through the leaves onto the ground, forming dappled shadows. This integration of nature with the indoor environment evokes a sense of tranquility and harmony. The TV background wall features a simple linear design without excessive decoration, yet it exudes an understated luxury. Beside it, bookshelves hold a selection of carefully chosen books and artworks, adding a cultural vibe to the space. The floor is covered with light-colored wooden planks that echo the color of the walls, making the entire space appear more spacious and bright. A rug with a simple pattern is chosen to add depth to the space while maintaining the overall minimalist style. Every detail in this open living room has been meticulously designed, capturing the essence of Italian minimalism while creating a comfortable and serene living atmosphere. Whether spending quality time with family or enjoying a moment of solitude, this is an ideal choice. --ar 16:9 --v 6.1
使用したプロンプトはこちら▼
＜prompt＞
Female high school student is sleeping in bed, in a warm bedroom with sunlight shining in. Spring flowers and green trees are in full bloom outside the window, and the light gauze tent is transparent. Morning light shines through the window, creating a beautiful spring scenery. This illustration is suitable for use in picture books, with bright colors, simple lines, lively and cute style, full of childlike fun, and a peaceful and healing atmosphere. The picture elements should be complete, high-definition picture quality, peaceful and warm morning, traditional Chinese home style, fresh color tones, stock illustration style, and ancient Chinese style --ar 3:4 --quality 2 --v 6.1
使用したプロンプトはこちら▼
＜prompt＞
Female high school student, photo of group asian student wearing school uniform realistic looking at the camera holding books and chromebook, A wooden cabin with a snowman, Christmas lights and decorations, snowy pine trees - a realistic photo backdrop for a photography studio. --ar 19:13 --v 6.1
使用したプロンプトはこちら▼
＜prompt＞
in the style of Vincent Van Gogh.A girl in a Japanese high school uniform carrying books and a stationery bag, walking on a blue background with simple line drawings of the items she is holding, including a notebook cover, pen cap, scissors, paper tape, etc., in the style of oil paintings. The character has long black hair tied back, wearing a white shirt under a green skirt, black shoes, with a smiling face expression, a simple drawing, empty thin black frame, 12x16" inch 3:4, white background, mockup, no bevels or detail, simple thin rectangular frame --ar 3:4 --v 6.1
使用したプロンプトはこちら▼
＜prompt＞
In this image, a Japanese high school girl is depicted sitting on an outdoor bench or ledge. She is an exceptionally beautiful and cute girl of European descent. She is focused on opening or organizing her black school bag. The girl has straight black hair tied in a ponytail, with bangs framing her face. She is wearing a traditional Japanese high school uniform consisting of a white blouse with navy accents. The background shows a blurred cityscape with some greenery, suggesting that she is in a park or on a school campus. hyper realism, --ar 9:16 --style raw --v 6.1
使用したプロンプトはこちら▼
＜prompt＞
Japanese high school girl, in a black suit with shorts and a skirt with a red and blue striped tie, wearing over-the-knee socks and leather shoes, sitting on a desk in front of her holding a handbag, full body photo in the style of a real photo, facing up to the camera, looking at the viewer, a 20 year old Japanese beauty with beautiful legs, long hair down, a smiling expression, white skin color, real life photos with natural light, photo of a graphic designer minimal desktop from top view, cinematic, arty --ar 1:1 --style raw --stylize 1000 --v 6.1
使用したプロンプトはこちら▼
＜prompt＞
Japanese High School Girl with Uniform in summer with a sofa in the background and a dog and two cats on it. --ar 16:9 --style raw --stylize 50 --v 6.1
使用したプロンプトはこちら▼
＜prompt＞
Real scene, young and cute Taiwanese university girl, walking in the corridor with textbooks, lively smile without showing teeth, close up portrait of an russian model with brown hair, with slicked-back hair, wearing earrings and a blue turtleneck. The small silver earring , 3/4 view, highlighting her shoulders and neck skin texture, against a dark blue background with studio lighting and a minimalistic design. contrast shadows. --ar 5:6 --stylize 1000 --v 6.1
使用したプロンプトはこちら▼
＜prompt＞
standing pose, An young Japanese woman with long hair, delicate features, smooth skin, wearing a Japanese school uniform, blazer uniform, slender waist, and long legs that are visible, in 4K picture quality, fm photography , Front view , Full Length Shot(FLS) , Natural light, painting of a cat climbing a ladder into the clouds, ethereal, cute, moody, eerie, pensive, deep and powerful vibe words "DREAM BIG" --ar 3:4 --v 6.1
使用したプロンプトはこちら▼
＜prompt＞
Female high school student, a high school asean girl in student uniform wait at the bus stop in the morning and smile, In a European-style house, a 2-year-old boy is smiling innocently, Hayao Miyazaki animation style, HD, 4k, --ar 16:9 --stylize 750 --v 6.1
使用したプロンプトはこちら▼
＜prompt＞
asian student in 14-16 years old in blue and white uniform smart carrying books, Gorgeous blonde woman with curly hair, brown eyes, in the style of Michael Whelan, 40 years old, generous curves --ar 3:5 --stylize 250 --v 6.1
使用したプロンプトはこちら▼
＜prompt＞
Full-height photo of a 15-year-old female student standing against a white background. She is wearing a midi checkered skirt that falls just below the knees, a white shirt, a blue tie, and a navy blazer with a school crest. The outfit is completed with black tight pants and black shoes. The girl is smiling at the camera, a row of 8 people of various races, genders and body types. They are wearing fashionable streetwear and denim and mixing styles across tops and bottoms. their pants are a mix of wide legged and standard fit. They are wearing a wide range of neutral colors with bright pop colors mixed in. They are standing in front of a grungy concrete wall with some monotone graffiti. --ar 16:9 --v 6.1
使用したプロンプトはこちら▼
＜prompt＞
Portrait, A beautiful asian high school girl sits in her classroom, Canon camera, Shot on 35mm lens, Snow white skin, mixer, standing pose, An young Japanese woman with long hair, delicate features, smooth skin, wearing a Japanese school uniform, blazer uniform, slender waist, and long legs that are visible, in 4K picture quality, fm photography , Front view , Full Length Shot(FLS) , Natural light, --v 6.1
使用したプロンプトはこちら▼
＜prompt＞
High school girls are drawn, Best_quality,Masterpiece,Exquisite,Photorealistic, 1 Chinese girl, Beauty,Black_hair,teacher, in classroom, Standing on the podium, White shirt, Black skirt,full body, Mockup of a thin::4 wooden minimalistic picture frame with an aspect ratio of 3:4 in the center, set in a bright, completely empty concrete room designed by tadao ando,::1 --ar 3:4 --style raw --v 6.1
使用したプロンプトはこちら▼
＜prompt＞
photo of a girl in a school uniform, on a white background, stock photo, high quality beautiful high school girl full body realistic, D miniature scene,autumn,a cute flower shop,various flowers inside,surrounded by oversized trees,cute elements,warm colors. Pastel color scheme, style,3D rendering,in the style of dreamful,cute characters and objects,exquisite details,high resolution,full of vitality,high definition,high detail,bright light source,warm tones. --chaos 20 --ar 16:9 --stylize 750 --v 6.1
使用したプロンプトはこちら▼
＜prompt＞
High school girls are drawn, Best_quality,Masterpiece,Exquisite,Photorealistic, 1 Chinese girl, Beauty,Black_hair,teacher, in classroom, Standing on the podium, White shirt, Black skirt,full body, Mockup of a thin::4 wooden minimalistic picture frame with an aspect ratio of 3:4 in the center, set in a bright, completely empty concrete room designed by tadao ando,::1 --ar 3:4 --style raw --v 6.1
使用したプロンプトはこちら▼
＜prompt＞
photo of a beautiful japanese woman, high school girl, long hair, the body is turned to the side, face is facing forward, natural smile, shoes are loafers, 18-years-old, she is sitting, full body shot, high school building background, 8k, high resolution, framed Wall painting of a majestic brown and colored long tailed pheasant, a Modern traditionalism living room with a cozy dark teal green velvet sofa, dark black patterned wallpaper, soft throw pillows in floral striped and velvet textures, and a dark, plush rug, throw blanket draped over the sofa, bokeh dried flowers out of focus in the foreground, and soft natural lighting coming through large windows. The room exudes a calm dark sophisticated ambiance blending classic and contemporary design elements, very dark green theme --ar 16:9 --stylize 750 --v 6.1
使用したプロンプトはこちら▼
＜prompt＞
Japanese high school girl, in a black suit with shorts and a skirt with a red and blue striped tie, wearing over-the-knee socks and leather shoes, sitting on a desk in front of her holding a handbag, full body photo in the style of a real photo, facing up to the camera, looking at the viewer, a 20 year old Japanese beauty with beautiful legs, long hair down, a smiling expression, white skin color, real life photos with natural light. --ar 29:64 --v 6.1
さいごに
生成AIを活用した美少女やグラビア美女のイラスト作成は、フリーランスやイラストレーターにとって新たな可能性を切り開くツールです。特にMidjourneyのような高度な生成AIを使用することで、アイデアをスピーディに形にしたり、異なるアートスタイルを試したりと、これまでにない表現の幅を持たせることができます。
本記事では、プロンプト作成の基本構成や、具体的なテンプレート例、さらには他の生成AIとの比較や商用利用時の注意点までを詳しく解説しました。これらの情報をもとに、クリエイティブな制作活動に取り入れていただければ、イラスト制作がより効率的で楽しいものになるでしょう。
また、生成AIはイラストレーター自身の表現力やクリエイティビティをさらに引き出す補完的なツールです。そのため、AIに頼りすぎず、自分自身の描写力や発想力を磨き続けることも重要です。AIと協働することで、これまでにないユニークな作品を生み出し、クライアントやファンに驚きと感動を提供できるでしょう。
これからの時代、AIの進化に伴い、クリエイティブな分野はますます変化していくことが予想されます。フリーランスやイラストレーターの皆さんがその変化を前向きに捉え、AIを積極的に取り入れることで、ビジネスの成長や自己表現の深化が図れることを願っています。
さいごに、今回紹介したプロンプトテンプレートやテクニックを試し、実際に生成AIを使ってみてください。試行錯誤を繰り返すことで、AIの特性を理解し、さらなる活用方法を見出すことができるはずです。これからも生成AIを活用したイラスト制作を通じて、自身の作品の可能性を広げ、新たな表現の世界に挑戦していきましょう。
今後も生成AIやイラスト制作に関する新しい情報やトレンドがあれば、随時アップデートしていきますので、ぜひまたこのブログを訪れてください。皆さんの創作活動が、さらに実りあるものになることを心から応援しています。
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