Thursday, July 30, 2026

AI synthetic Touhou fan-art: Youmu and Sanae standing against Tojiko, Futo, and Futo in Touhou 13 ~ Ten Desires

 

Posted on my pixiv page: https://www.pixiv.net/en/artworks/147796476

YouTube: https://www.youtube.com/shorts/4Htb42KpQzk
NicoNico: https://www.nicovideo.jp/shorts/ss46607508

Lately, I’ve been busy with my main job and have no air conditioning in my room, making it hard to focus on creative work due to my primary research duties. Today, I scanned a rough sketch and finished it using a mix of AI tools. I also made this as an example of creating free AI art with ChatGPT. The input prompts are as follows: 

 


Redraw this illustration as a polished early-to-mid-1990s Japanese fantasy RPG key illustration, reflecting the elegant visual language of Japanese fantasy strategy games, anime illustration books, and romantic shōjo-fantasy artwork from approximately 1991–1995.

Use delicate but confident linework, softly modelled cel shading, warm luminous skin tones, flowing hair with carefully separated locks, richly described fabrics, refined accessories, and a detailed atmospheric setting.

Combine the dramatic clarity and heroic presence of early-1990s fantasy RPG promotional art with graceful silhouettes, romantic colour harmony, jewel-like eyes, decorative costume design, and the gentle fantasy elegance associated with period shōjo-oriented anime illustration.

Use a portrait composition with a width-to-height aspect ratio of 1:1.414, matching the international A-series paper proportion and suitable for high-quality A3 or A4 printing.

Preserve the overall composition, dramatic storytelling, relative character placement, colour scheme, costume identities, signature accessories, and background concept while significantly refining the anatomy, facial expressions, line quality, costume construction, lighting, shading, and overall rendering quality.


COMPOSITION

The scene depicts a dramatic confrontation inside an ancient supernatural sanctuary between two determined heroines below and three mysterious ruling nobles above.
The upper trio should dominate the composition through their elevated position, supernatural authority, imperious posture, and unmistakably villainous confidence.

They should look down upon the two heroines with smug, fearless smiles, behaving like arrogant rulers who are completely certain of their superiority.

Their expressions should remain elegant and controlled rather than cartoonishly exaggerated, but their softly half-lidded, self-assured eyes, raised chins, relaxed posture, and subtly mocking smiles should clearly communicate that they regard the heroines as inferior opponents.

The lower heroines should appear resolute, courageous, and slightly overwhelmed, yet still ready to fight and determined to hold their ground.

Bring the two lower heroines slightly closer to the viewer and increase their visual scale moderately so that they become the principal foreground focus.

Their faces, upper bodies, poses, weapons, and identifying accessories should be more prominent and easier to read, while avoiding an excessive close-up or an overly cropped composition.

Retain enough surrounding space to preserve the dramatic relationship between the heroines below and the three nobles above.

Maintain a clearly readable two-tier composition:

- The three mystical nobles occupy the elevated upper third to upper half of the image.
- The two heroines anchor the lower foreground and should be rendered at a moderately larger visual scale than before.
- Use foreground perspective to make the lower heroines appear slightly closer to the viewer than the upper trio.
- Their faces and upper bodies should be visually prominent, while their important weapons, sleeves, hair ornaments, and supernatural companion remain visible.
- The enlargement should remain restrained and must not become an extreme close-up.
- The upper trio should remain elevated and authoritative without becoming disproportionately large.
- The lower heroines should occupy a substantial portion of the lower half of the composition while leaving sufficient space for the sanctuary and upper trio.
- Do not reduce the lower heroines to small distant figures.
- Do not crop their faces, hands, primary weapons, signature ornaments, or the large faceless ghostly wisp.
- Preserve a balanced poster-like composition rather than turning the image into a close-up character portrait.
- Use overlapping sparingly so that no face, hand, weapon, head ornament, magical accessory, or identifying feature is obscured.
- Maintain a clear visual flow from the upper ruling trio down toward the two heroines.
- Keep all five principal silhouettes visually distinct.
- Use the elevated placement, downward gazes, raised chins, composed gestures, and confident smiles of the upper trio to reinforce their status as the dominant villainous faction.

UPPER SECTION

Arrange three mystical nobles from left to right.
All three nobles should be portrayed as elegant but unmistakable antagonists.

They should wear subtly smug, fearless, and condescending smiles while looking down at the heroines.

Their expressions and body language should suggest arrogance, superiority, and complete confidence in their power.

Avoid neutral, friendly, apologetic, surprised, worried, or overly cheerful expressions for the upper trio.

LEFT

A ghostly young woman with short, wavy, light-green hair, wearing a dark green traditional robe with wide sleeves and a small black ceremonial hat.

Her lower body gradually fades into a translucent spectral tail surrounded by subtle crackling spiritual lightning.

Her spectral form should remain elegant and clearly defined rather than smoky or shapeless.

Her expression should be quietly menacing and openly self-assured.

Give her softly half-lidded, self-assured eyes, a slightly raised chin, and a restrained but unmistakably sinister smirk

Her spectral posture should feel relaxed, proud, and condescending rather than defensive or uncertain.


CENTRE

A dignified, royal-looking human woman with short light-brown hair arranged into angular, upward-swept locks around the crown and temples.

The angular outer silhouette is formed entirely by overlapping locks of hair that visibly grow from and remain connected to the scalp.

There must be no separate ear-shaped protrusions above the hairline.

She wears elaborate white-and-purple ceremonial robes with gold ornamentation and large purple headphone-like ceremonial ear-covering ornaments on both sides of her head.

These purple side ornaments must remain clearly visible, symmetrical, and prominent.

They should read visually like large decorative headphone-like ear coverings or ear pads placed over the sides of her normal human ears.

They are essential parts of her design and must not be omitted, reduced to tiny accents, merged into the hair, or mistaken for anatomy.

Her normal human ears remain in their natural position at the sides of her head and are partly covered by these large purple ceremonial ornaments.

The purple ornaments are decorative accessories and must not be interpreted as animal ears or non-human anatomical features.

All angular hair tips must retain clearly visible hair texture, layered strands, shading, and highlight bands.

Her ceremonial clothing should appear refined, layered, regal, and structurally coherent.

She confidently carries a softly glowing golden ritual sword.

The sword should remain clearly recognisable as a ceremonial golden blade and should not be replaced by another type of weapon.

She must have completely human facial anatomy.

Give her a refined human nose, a naturally shaped human mouth, smooth human cheeks, and an elegant human jawline.

Do not give her a feline muzzle, cat-like nose, split upper lip, whisker marks, animal fangs, cat-like mouth shape, or any other animal facial characteristic.

Her expression may be proud, villainous, and condescending, but it must remain unmistakably human and regal.

She should appear unmistakably as the proud and commanding leader of the trio.

Give her a regal, imperious posture with her chin slightly raised, shoulders open, and body language that suggests complete control of the sanctuary.

Her expression should feature a dignified but villainous smile: calm, fearless, condescending, and slightly mocking, as though the heroines pose no genuine threat to her.

She should look more commanding and arrogant than the other two nobles without appearing wild or emotionally unstable.


RIGHT

A petite ancient-style spellcaster with long silver-gray hair tied clearly into a single ponytail at the back of her head.

The ponytail must be unmistakably visible, with its tied base emerging clearly from behind and slightly below her tall headwear.

Her hairstyle must read first and clearly as one ponytail.

A few soft face-framing strands may fall beside her cheeks, but the majority of her long hair must remain visibly gathered into a single flowing ponytail behind her.

Do not interpret her hairstyle as loose hair, a bob cut, twin-tails, side-tails, or an indistinct mass hidden behind the hat.

She wears elegant white ceremonial robes trimmed in green and purple over a dark pleated skirt.

At her chest, she wears a clearly visible black munao (chest cord / breast cord).

The munao must be black and should read as a dark cord-like fastening element across the chest area.

Do not replace the black munao with a gold ornament, golden accessory, gold brooch, gold clasp, gold necklace, or any other gold decorative object.

On her head, she wears a tall, vertically elongated traditional eboshi made primarily from matte-black fabric.

The eboshi must read unmistakably as a black hat.

Add a small number of clearly visible narrow white bands or slender white stripes following selected vertical contours and structural seams of the eboshi.

The white bands should be thin but clearly readable.

They should be noticeably wider than barely visible hairline scratches, but much narrower than broad stripes, large panels, or wide fabric sections.

The white bands must remain secondary decorative elements and must not cover, overpower, or visually replace the black fabric.

The black fabric should occupy most of the visible surface of the eboshi.

The finished headwear must read as a tall black eboshi decorated with narrow white bands, never as a white eboshi with black details.

Do not render the eboshi as white, off-white, cream, pale gray, silver, or predominantly light-coloured.

Do not use large white panels, broad white bands, or thick white borders.

Several small decorative ritual plates associated with fire magic float gently around her.

The ritual plates should appear as distinct ceremonial objects rather than generic magical circles or flames.

She should wear a sly, knowing, and slightly cruel smile.

Her eyes should appear intelligent, self-assured, and slightly sly, with a graceful but confident downward gaze toward the heroines.

Avoid making her eyes excessively sharp or harsh; they should remain elegant and subtly shōjo-styled while still conveying cunning and superiority.

Her small stature should contrast with her haughty attitude: she should appear amused, intellectually superior, and completely certain that her fire magic places her beyond the heroines’ reach.


LOWER SECTION

Arrange two heroines from left to right.


LEFT

A graceful shrine maiden with very long green hair, wearing a blue-and-white shrine outfit with wide detached sleeves.

She has a small frog-shaped hair ornament and a winding snake-shaped hair ornament.

Both hair ornaments must remain clearly visible and visually distinct.

Her pose should be defensive yet determined.

She should appear courageous but aware that the opposing trio is extremely powerful.

Her long hair and detached sleeves should create an elegant sense of motion while preserving a clear silhouette.


RIGHT

A young silver-haired swordswoman wearing a green-and-white dress with a dark skirt and a black ribbon headband.

She carries two swords: Roukanken, a long katana, and a shorter companion sword.

She must grip Roukanken firmly with both hands in a balanced ready combat stance.

Both hands must remain visibly placed on Roukanken’s hilt.

Her two-handed posture should feel disciplined, stable, and traditional, as if she is bracing herself against a much stronger opponent.

The shorter companion sword must remain sheathed at her waist as a visible secondary weapon.

Do not place the shorter companion sword or any other object in either of her hands.

Both swords must remain present, visually separate, and clearly identifiable.

She must be shown gripping Roukanken firmly with both hands in a ready combat stance.

Her two-handed sword posture should feel disciplined, balanced, and traditional, as if she is bracing herself to face a powerful enemy.

The shorter companion sword should remain present and visible as her secondary weapon, but Roukanken must be the main weapon actively held in both hands.

Behind her floats a large translucent pale ghostly spirit shaped as a smooth, elongated spiritual wisp.

The ghostly spirit must be completely faceless and featureless.

It must have no eyes, no mouth, no nose, no eyebrows, no facial markings, and no human-like expression.

It must also have no eye-like hollows, no mouth-like indentations, no facial grooves, no recessed dimples, no carved-looking depressions, and no shadowed pits that could be read as facial features.

Its surface should remain smooth, soft, pale, translucent, gently curved, and visually clean.

Its form should remain abstract, resembling a pure floating spirit orb or spiritual wisp rather than a living creature.

The ghostly spirit should remain a distinct supernatural companion and must not blend into the background mist.

She should appear calm, focused, and ready to counterattack.

Her stance should communicate disciplined resolve, controlled tension, and readiness for combat.


BACKGROUND

Depict a vast ancient mausoleum-like sanctuary.

Include:

- towering stone pillars
- weathered ceremonial architecture
- ancient shrines
- mystical glowing symbols
- dim supernatural illumination
- drifting spiritual mist
- subtle floating dust particles
- deep atmospheric shadows
- layered architectural depth
- worn stone surfaces
- distant ceremonial structures
- subtle supernatural light sources

Create the feeling of an ominous late-game supernatural dungeon while maintaining visual clarity.

The sanctuary should feel ancient, sacred, oppressive, mysterious, and spiritually charged, with a strong sense of scale.

Use dim magical light, restrained coloured reflections, deep shadows, and controlled atmospheric perspective.

The background should support the characters and dramatic narrative without competing visually with their faces, poses, silhouettes, weapons, headwear, or identifying accessories.

The architecture should remain readable and richly atmospheric without becoming excessively busy or photorealistic.


RENDERING STYLE

Render everything as a highly polished early-to-mid-1990s Japanese fantasy RPG illustration, specifically evoking the visual period of approximately 1991–1995.

Combine clean anime character rendering with softly dimensional colouring and print-quality detail.

The result should resemble a premium Japanese fantasy game illustration, visual collection artwork, game-box key visual, or illustrated fantasy story plate.

Use clean character rendering, expressive faces, carefully designed costumes, warm dimensional shading, and a detailed but visually controlled environment.

Give all principal characters expressive, softly shaped anime eyes with refined lashes, jewel-like irises, layered highlights, and subtle colour reflections, leaning gently toward a graceful early-1990s shōjo-fantasy sensibility.


LINEWORK

Use:

- fine, elegant, and confidently tapered linework
- thin-to-medium outlines with subtle variation in line weight
- clean contours with controlled and naturally varied thickness
- dark-coloured linework rather than uniformly pure black
- deep brown, charcoal, muted navy, dark green, dark violet, or other costume-related contour colours
- crisp facial details
- carefully controlled internal costume lines
- clean separation between hair, skin, fabric, weapons, and accessories

Avoid thick uniform outlines, harsh black contouring, scratchy strokes, rough sketch lines, or overly mechanical vector-like edges.


ANATOMY AND PROPORTIONS

Use graceful, naturally balanced anime proportions with a slightly elegant and elongated character design.

Construct the anatomy carefully, including:

- naturally placed shoulders
- elegant necks
- well-balanced torsos
- coherent hips and legs
- slender but believable arms
- anatomically coherent elbows and knees
- elegant hands
- slender fingers
- naturally articulated joints
- convincing weight and posture
- clear separation between overlapping limbs

Avoid chibi proportions, exaggerated modern moe anatomy, overly large heads, excessively narrow waists, distorted limbs, duplicated fingers, or unnatural poses.


FACIAL DESIGN

Draw the faces with delicate, polished, and emotionally readable features.

Use:

- refined, slightly larger, softly shaped anime eyes with a gentle shōjo-manga influence
- elegant upper eyelashes and softer lower eyelid lines
- layered jewel-like iris colours
- controlled reflections within the irises
- multiple small, carefully placed eye highlights
- delicate noses
- small but expressive mouths
- softly sculpted cheeks
- subtle softness around the eyes and mouth
- restrained facial blush
- elegant and readable expressions

The eyes should be bright, emotive, and jewel-like without becoming oversized, chibi-like, or modern moe-style.

The overall eye design should feel graceful, romantic, and slightly more shōjo-oriented rather than sharp, aggressive, or strongly shōnen-manga-like.

Avoid excessively narrow, needle-sharp, or severe eye shapes.

Prefer softer eye contours, slightly gentler gaze lines, and more graceful eyelash treatment while preserving emotional clarity.

Keep the expressions controlled but unmistakably readable:

- smug, fearless, condescending, and villainously confident expressions for the upper trio
- raised chins, self-assured eyes, subtle mocking smiles, and downward gazes for the upper trio
- courage, tension, discipline, and determination for the lower heroines

The upper trio must not look friendly, neutral, apologetic, surprised, frightened, worried, or uncertain.

Their villainous expressions should remain elegant and sophisticated rather than comical, grotesque, or excessively exaggerated.


HAIR RENDERING

Render hair as smooth, flowing, and clearly organised masses divided into broad, elegant locks.

Use:

- clearly separated hair sections
- controlled hair volume
- graceful silhouettes
- broad luminous highlight bands
- subtle tonal transitions
- gentle reflected colour
- controlled edge highlights
- clean overlapping hair layers
- soft movement without excessive loose strands

- clearly readable separation between stylised pointed hair tufts and actual ears
- pointed hair shapes that visibly originate from the scalp and remain connected to the hairstyle
- normal human ears whenever they are visible 

For the spellcaster in the upper-right section, clearly gather the silver-gray hair into one visible ponytail.

The ponytail’s tied base and trailing length must remain readable behind and below the tall eboshi.

Do not allow the eboshi, robes, background, or magical effects to conceal the ponytail completely.

Keep a few soft face-framing strands while preserving the ponytail as the dominant hairstyle.


For the central noble in the upper section, the pointed light-brown shapes on top of and around her hairstyle must be rendered as angular hair locks with normal hair texture and highlights.

Do not interpret these pointed locks as kemonomimi, cat ears, fox ears, wolf ears, horns, or feathers.

Avoid rendering every individual strand.

The hair should feel soft and dimensional while preserving clean anime readability.


SKIN RENDERING

Use warm ivory, peach, soft rose, and pale golden skin tones.

Add restrained blush and warmth to:

- cheeks
- fingertips
- elbows
- shoulders
- knees
- other naturally warm areas

Use gentle reflected colour inside the shadows so that the skin feels luminous and integrated with the surrounding magical illumination.

Shadows on the skin may contain subtle pale rose, lavender, blue-green, or golden reflections.

Avoid plastic-looking skin, wet-looking gloss, excessive airbrushing, or photorealistic pores.


SHADING AND COLOUR

Base the rendering on crisp two- or three-step cel shading.

Selectively soften some shadow transitions with restrained airbrush-like gradients, especially on:

- skin
- hair
- curved fabric
- rounded accessories
- ceremonial ornaments
- magical objects

The result should remain clearly illustration-oriented rather than painterly.

Use moderately saturated jewel colours balanced with soft pastel, muted secondary tones, and restrained neutral colours.

Use:

- warm luminous highlights
- cool reflected shadows
- pale rose reflected light
- lavender shadow accents
- blue-green ambient reflections
- soft amber illumination
- restrained golden magical light
- controlled pearlescent accents

Maintain harmonious colour relationships across the image.

Avoid harsh digital gradients, neon-heavy colouring, muddy shadows, oversaturation, or flat modern mobile-game shading.


HIGHLIGHTS AND REFLECTIONS

Keep highlights controlled, selective, and slightly pearlescent.

Use brighter reflections on:

- eyes
- hair
- polished metal
- gemstones
- lacquered accessories
- jewellery
- glass-like magical objects
- ceremonial weapons
- glowing ritual items

Use polished metallic, lacquered, and gemstone reflections on weapons, jewellery, ceremonial ornaments, and magical accessories.

Avoid excessive bloom, extreme gloss, plastic-like highlights, or uniformly shiny surfaces.


COSTUMES AND MATERIALS

Render clothing with:

- clearly readable fabric construction
- elegant folds
- layered sleeves
- decorative trim
- ribbons
- bows
- frills
- collars
- seams
- ceremonial ornamentation
- clear costume silhouettes
- graceful visual rhythm

Different materials should remain visually distinct.

Fabric should appear soft and slightly matte.

Metal, lacquer, jewellery, gemstones, polished weapons, and ceremonial accessories should use sharper and more defined reflections.

Preserve the original colour identities and distinguishing costume features of all five characters.

Do not modernise, simplify, or substantially redesign the costumes.


LIGHTING

Use dramatic but controlled fantasy lighting.

Include:

- soft but distinct rim lighting
- gentle edge illumination around hair
- light along shoulders and sleeves
- subtle highlights on costume edges
- controlled magical bounce light
- coloured reflections inside shadows
- restrained atmospheric glow
- deep but readable environmental shadows

Use rim lighting and atmospheric separation to keep the characters clearly visible against the dark sanctuary.

The light should enhance the dramatic hierarchy:

- the upper trio should feel supernaturally elevated
- the lower heroines should remain visible, heroic, and emotionally readable

Avoid extreme bloom, blown-out highlights, or lighting effects that obscure facial details.


ATMOSPHERIC DEPTH

Create atmospheric depth through:

- controlled spiritual mist
- coloured shadows
- layered architecture
- gradual reduction of contrast in distant structures
- subtle floating particles
- restrained supernatural haze
- softly illuminated symbols
- deep foreground-to-background separation

Keep the foreground characters sharper and more detailed than the distant environment.

The background should remain richly atmospheric without overpowering the characters.


OVERALL FEELING

The finished illustration should resemble a professionally published Japanese fantasy RPG key visual, game-box illustration, premium visual collection artwork, or fantasy illustration-book plate produced between approximately 1991 and 1995.

It should combine:

- heroic fantasy tension
- romantic shōjo-fantasy elegance
- slightly dreamlike supernatural atmosphere
- refined anime character design
- graceful silhouettes
- carefully controlled emotional acting
- decorative costume design
- warm dimensional colouring
- polished print-oriented craftsmanship

The upper ruling trio should possess overwhelming supernatural authority, elegant menace, and unmistakable villainous arrogance.

They should appear like proud rulers presiding over their domain, looking down upon the heroines with fearless, smug, and subtly mocking smiles.

Their dominance should be conveyed through elevated placement, confident posture, relaxed gestures, softly half-lidded or self-assured eyes, raised chins, and complete emotional composure.

The lower heroines should radiate courage, vulnerability, discipline, and determination.

The final artwork should feel romantic, heroic, elegant, dramatic, slightly theatrical, timeless, and meticulously polished.

It should feel rooted in early-1990s Japanese analogue anime, fantasy game illustration, and premium illustration-book aesthetics rather than contemporary digital mobile-game rendering.


AVOID

Avoid:

- modern gacha-game aesthetics
- contemporary mobile-game character rendering
- hyper-detailed photorealism
- rough painterly textures
- heavy brushwork
- 3D-rendered surfaces
- plastic-looking skin
- wet-looking skin
- excessive gloss
- extreme bloom
- thick uniform outlines
- uniformly pure-black contours
- oversized modern moe-style eyes
- chibi proportions
- exaggerated anatomy
- flat contemporary cel shading
- harsh digital gradients
- neon-heavy colour treatment
- excessive magical visual effects
- excessively busy background decoration
- empty or oversimplified backgrounds
- simplified costume details
- merged accessories
- duplicated characters or body parts
- animal ears on the central upper noble
- kemonomimi features
- cat-like noses or mouths
- feline muzzles
- whiskers or animal facial markings
- pointed hair locks being mistaken for anatomical ears
- making the two lower heroines too small or distant
- extreme close-up cropping of the lower heroines
- enlarging the lower heroines so much that their weapons or identifying accessories leave the frame
- excessively sharp or needle-like eyes
- strongly shōnen-manga-style eye shapes
- harsh, overly angular facial features
- making the lower right swordswoman hold Roukanken with only one hand
- hiding or obscuring the two-handed grip on Roukanken
- omitting the large purple headphone-like ear-covering ornaments of the central upper noble
- shrinking, hiding, or merging the central upper noble’s headphone-like purple side ornaments into the hair
- changing the right upper noble’s eboshi away from predominantly black with white line detailing
- giving the faceless ghostly spirit eye-like hollows, mouth-like grooves, facial indentations, dimples, pits, or recessed marks

- a white, off-white, cream, pale-gray, silver, or predominantly light-coloured eboshi
- an eboshi whose white decoration covers or visually overpowers most of the black fabric
- large white panels, excessively broad white bands, or thick white borders on the upper-right spellcaster’s eboshi
- white bands so wide that the eboshi appears mainly white
- white details reduced to barely visible hairline scratches
- a completely plain black eboshi with no visible narrow white bands
- rendering the eboshi as a generic white court hat
- a short, wide, rounded, or horizontally stretched eboshi
- loose untied hair on the upper-right spellcaster
- a bob cut, twin-tails, side-tails, or an unclear hairstyle for the upper-right spellcaster
- completely hiding the tied base or flowing length of the upper-right spellcaster’s ponytail behind the eboshi
- failing to show the upper-right spellcaster’s hairstyle clearly as a single ponytail
- hiding the tied base of the upper-right spellcaster’s ponytail behind the eboshi
- rendering the upper-right spellcaster with loose hair, a bob cut, twin-tails, side-tails, or an unclear hairstyle
- rendering the upper-right spellcaster’s eboshi as white, pale, or predominantly light-coloured
- making the upper-right spellcaster’s eboshi mostly white with black details
- omitting the narrow white bands on the upper-right spellcaster’s black eboshi
- replacing the upper-right spellcaster’s black munao with a gold ornament or any gold chest accessory
- adding gold decorative chest ornaments where the black munao should be

ADDITIONAL STYLE GUIDANCE

Use an early-1990s analogue cel-and-airbrush sensibility executed with clean modern precision.

Keep the rendering illustration-oriented rather than painterly.

Maintain a polished balance between clean anime linework and softly modelled colour.

Use:

- thin-to-medium tapered outlines
- subtle line-weight variation
- dark coloured contours instead of pure black wherever appropriate
- two- or three-step cel shadows
- selectively softened airbrushed transitions
- warm ivory and peach skin
- restrained blush
- pale rose, lavender, blue-green, and golden reflected light
- smooth hair highlights arranged as broad elegant bands
- controlled pearlescent accents
- selective white highlights
- decorative fantasy motifs
- readable costume construction
- elegant fabric folds
- high-resolution facial and accessory detail
- subtle analogue print texture only when it does not reduce clarity

The final rendering should feel warm, dimensional, detailed, charming, dramatic, and professionally refined.

Apply this style consistently to all five characters, weapons, supernatural effects, costumes, accessories, and environmental elements.

Favour a slightly softer and more romantic facial treatment overall, especially in the eyes.

The eye design across all principal characters should lean gently toward classic shōjo-fantasy illustration: graceful, luminous, and elegant, with soft contours and refined lashes, rather than strongly angular or aggressively sharp shōnen-style eyes.


CRITICAL COMPOSITION AND PRESERVATION REQUIREMENTS

Keep exactly five principal characters in the image.

Preserve the specified upper-and-lower arrangement and the exact left-to-right order of the characters.

Keep every character visually distinct, with clearly separated and readable silhouettes.

Do not omit, merge, exchange, simplify, duplicate, or substantially redesign any character’s:

- costume
- hairstyle
- hair colour
- headwear
- facial expression
- weapon
- magical accessory
- supernatural feature
- identifying ornament

Ensure that all faces, hands, important weapons, head ornaments, signature accessories, and supernatural features remain clearly visible and anatomically coherent.


CHARACTER COUNT AND PLACEMENT

The upper section must contain exactly three mystical nobles:

- the light-green-haired ghostly woman on the left
- the royal-looking ceremonial woman in the centre
- the silver-gray-haired spellcaster on the right

The lower section must contain exactly two heroines:

- the long green-haired shrine maiden on the left
- the silver-haired swordswoman on the right

Do not duplicate:

- characters
- faces
- heads
- limbs
- hands
- fingers
- weapons
- hats
- swords
- ritual plates
- hair ornaments
- ghostly companions

Do not add unrelated characters, modern clothing, technological objects, text, lettering, logos, borders, speech bubbles, signatures, or watermarks.

Preserve all character designs, poses, expressions, costumes, accessories, colour relationships, composition, and background details specified elsewhere in this prompt.


UPPER-SECTION EXPRESSIONS

The three upper nobles must all display clearly villainous, smug, fearless, and condescending expressions.

They should look down toward the heroines with raised chins, softly half-lidded or self-assured eyes, relaxed confidence, and subtle mocking smiles.

Keep their villainous expressions elegant, refined, controlled, and sophisticated rather than cartoonishly exaggerated.

Do not give any member of the upper trio a friendly, neutral, apologetic, surprised, worried, frightened, confused, uncertain, or sympathetic expression.


CENTRAL UPPER NOBLE

The short light-brown pointed shapes belonging to the central upper noble are stylised human hair tufts only.

They must be rendered as connected locks of hair that visibly originate from the scalp and retain normal hair texture, layered strands, shading, and highlights.

Do not transform these hair tufts into:

- cat ears
- fox ears
- wolf ears
- animal ears
- horns
- feathers
- any other non-human anatomical feature

The central upper noble is a human woman and not a cat-like, animal-like, or kemonomimi character.

Her face must remain completely human.

Give her a natural human nose, a naturally shaped human mouth, smooth human cheeks, and an elegant human jawline.

Do not add:

- a feline nose
- a muzzle
- a split upper lip
- whiskers
- animal fangs
- a cat-like mouth
- animal facial markings
- any other feline characteristic

Her large purple headphone-like ceremonial ear-covering ornaments are mandatory design elements.

They must remain clearly visible, prominent, symmetrical, and positioned over the sides of her normal human ears.

Do not omit them, reduce them to tiny shapes, hide them behind the hair, merge them into the hairstyle, or reinterpret them as anatomy.

Do not replace the central upper noble’s softly glowing golden ritual sword with another type of weapon.


LOWER HEROINES

The two lower heroines should be moderately enlarged and placed slightly closer to the viewer so that they become the principal foreground focus.

Their increased size must remain restrained.

Do not turn the composition into an extreme close-up.

Keep their:

- faces
- upper bodies
- hands
- poses
- weapons
- sleeves
- hair ornaments
- supernatural companion

clearly visible.

Preserve sufficient visual space above and around them so that the elevated upper trio and the ancient sanctuary remain clearly readable.

The facial rendering should lean slightly toward a graceful shōjo-fantasy sensibility.

Do not render the eyes in an excessively sharp, severe, or strongly shōnen-manga style.

Keep the eyes elegant, luminous, softly shaped, and emotionally readable.


SILVER-HAIRED SWORDSWOMAN

The silver-haired swordswoman in the lower right must actively hold Roukanken with both hands in a balanced ready stance.

Both hands must remain clearly and anatomically positioned on Roukanken’s hilt.

Do not depict her casually carrying Roukanken in one hand.

Do not omit, hide, or obscure the clear two-handed grip.

Her two-handed sword posture must remain visible, stable, disciplined, and readable within the composition.

The shorter companion sword must remain visibly sheathed at her waist as a secondary weapon.

Do not place the shorter companion sword in either hand.

Do not remove or merge the shorter companion sword with Roukanken.

Do not add a third sword or duplicate Roukanken.


FACELESS GHOSTLY SPIRIT

The large pale ghostly spirit beside the silver-haired swordswoman must remain completely smooth, faceless, featureless, abstract, pale, and translucent.

Do not add or imply:

- eyes
- a mouth
- a nose
- eyebrows
- teeth
- facial markings
- facial grooves
- facial indentations
- eye-like hollows
- mouth-like grooves
- shadowed pits
- recessed dimples
- carved-looking depressions
- any hollow or mark that could be interpreted as a face

Do not transform the ghostly spirit into:

- a person
- an animal
- a mascot
- a monster
- a skull
- a humanoid ghost
- any creature with a recognisable face

The ghostly spirit must remain a smooth, elongated spiritual wisp with a clean, gently curved surface.

Do not remove it or blend it completely into the background mist.


UPPER-RIGHT SPELLCASTER: HAIRSTYLE

The upper-right spellcaster’s primary hairstyle must remain a single silver-gray ponytail.

The tied base of the ponytail must remain clearly visible behind or slightly below the tall eboshi.

The ponytail’s length must flow naturally behind her and remain visually readable.

A few soft strands may frame her face, but the majority of her long hair must remain visibly gathered into the ponytail.

Do not replace the ponytail with:

- loose untied hair
- a bob cut
- twin-tails
- side-tails
- an indistinct hairstyle
- hair completely hidden beneath the eboshi

Do not conceal the tied base or the flowing length of the ponytail behind the eboshi, her body, her robes, magical effects, the background, or another character.


UPPER-RIGHT SPELLCASTER: EBOSHI

The upper-right spellcaster must wear a tall, vertically elongated traditional eboshi made predominantly from matte-black fabric.

The black fabric must remain the visually dominant colour and should occupy most of the visible surface of the hat.

The eboshi must read first and unmistakably as a tall black eboshi.

Add a small number of clearly visible narrow white bands or slender white stripes following selected vertical contours, structural seams, or edges of the eboshi.

The white bands must be thin but clearly readable.

They should be wider and more visible than barely perceptible hairline scratches, but substantially narrower than broad stripes, thick borders, large panels, or wide fabric sections.

The white bands must remain secondary decorative elements and must not cover, overpower, or visually replace the black main body.

The finished headwear must read as a tall black eboshi decorated with narrow white bands, never as a white eboshi with black details.

Do not render the eboshi as:

- white
- off-white
- cream
- pale gray
- silver
- predominantly light-coloured
- half-white
- mostly white

Do not use:

- large white panels
- excessively broad white bands
- thick white borders
- wide white stripes
- broad white edging
- filled white sections
- pale fabric covering large portions of the hat

Do not reduce the white bands to invisible scratches.

Do not omit the white bands entirely.

Do not make the eboshi:

- short
- wide
- rounded
- horizontally stretched
- visually similar to a generic white court hat


OTHER REQUIRED FEATURES

Do not remove the light-green-haired ghostly woman’s spectral tail or spiritual lightning.

Do not remove the upper-right spellcaster’s ritual plates.

Do not remove the long green-haired shrine maiden’s frog-shaped and snake-shaped hair ornaments.

Do not replace, merge, simplify, or obscure any signature weapon, magical accessory, head ornament, hairstyle, supernatural feature, or identifying costume detail described elsewhere in this prompt.

UPPER-RIGHT SPELLCASTER: MUNAO

The upper-right spellcaster must wear a clearly visible black munao at the chest.

The munao should read as a dark cord-like fastening or breast cord element and must remain black.

Do not replace it with:

- a gold ornament
- a golden chest accessory
- a gold brooch
- a gold clasp
- a gold necklace
- a jewel-like gold decoration
- any other gold decorative object

The black munao is a required identifying costume element and must remain clearly visible.


--- Tags ---
#TouhouProject #Touhou #SanaeKochiya #YoumuKonpaku #ToyosatomiminoMiko #MononobenoFuto #SoganoTojiko #Gensokyo #FanArt #TouhouFanArt #AIArt #AnimeArt #FantasyArt #JapaneseFantasy #DarkFantasy #Mystical #Supernatural #AncientSanctuary #SpiritMausoleum #MysticTemple #Magic #Swordwoman #ShrineMaiden #Ghost #Spirit #BattleScene #FinalBattle #BossBattle #FemaleCharacters #AnimeGirls #GroupIllustration #KeyVisual #GameArt #RPGArt #1990sAnimeStyle #RetroAnime #ShojoFantasy #CelShading #VerticalIllustration #DramaticLighting #FantasyWorld #EpicConfrontation

Sunday, July 26, 2026

My codes of financial time series analysis and the AI art used in my Yukkuri Commentary movie posted on YouTube


This video presents our recent research on financial volatility forecasting, comparing classical econometric models, signal-processing techniques, and modern machine-learning approaches.

The study evaluates the forecasting performance, volatility prediction accuracy, computational efficiency, and interpretability of five different methods:

• GARCH
• SARIMA
• Matrix Pencil (MP)
• XGBoost
• Long Short-Term Memory (LSTM)

Using Bitcoin returns as a high-volatility financial asset, we investigate whether modern AI-based methods consistently outperform traditional forecasting techniques when accuracy, explainability, and computational cost are considered simultaneously.

Our results show that:

✓ SARIMA achieves the lowest return forecasting error.
✓ Matrix Pencil delivers comparable forecasting accuracy with extremely low computational cost.
✓ XGBoost provides a strong balance between accuracy and efficiency.
✓ LSTM exhibits relatively strong performance in tracking volatility patterns and market regime changes, despite higher forecasting errors and computational requirements.
✓ No single model dominates across all evaluation criteria.

The findings suggest that the Matrix Pencil method remains a competitive and highly interpretable alternative to black-box machine-learning models for financial forecasting applications. 

NicoNico: https://www.nicovideo.jp/watch/sm46580360 

Sakuya, Youmu, and Marisa challenge a unique cooking competition!
Using Bitcoin market data as ingredients, five dishes — GARCH, SARIMA, Matrix Pencil, XGBoost, and LSTM — to compete to predict future market movements ♬
This video explains the strengths and characteristics of traditional econometric models, signal-processing approaches, and modern AI techniques through a fun Yukkuri-style commentary.
Which model will create the best “forecasting recipe” for the future market?

Artwork including original character illustrations:
https://www.pixiv.net/en/tags/%E5%A6%...

Music, sound effects, and background materials used in this video are credited in the end credits.
#TouhouProject #Touhou #YukkuriCommentary #reimu #marisa #sakuya #youmu #remilia #yuyuko #Finance #Bitcoin #Cryptocurrency #QuantitativeFinance #FinancialEngineering #FinancialForecasting #VolatilityForecasting #Econometrics #ARIMA #SARIMA #GARCH #ArtificialIntelligence #MachineLearning #DeepLearning #DataScience #TimeSeriesAnalysis #ExplainableAI #XGBoost #LSTM #SignalProcessing #MatrixPencil #Prony #PronyMethod #Python #Research


This image is posted on my pixiv page: https://www.pixiv.net/en/artworks/147674029
My attempt is to generate an AI art with free of charge using ChatGPT. Many AI illustration tools charge fee and are not so flexible yet. I have experimented with generating an image based on my rough drawing together with the input script into ChatGPT.
This is an AI-synthetic illustration output by ChatGPT based on my rough drawing. The following is the input script. It is like asking the contemporary popular character designer to illustrate Touhou Project characters in his style. ☆彡



Redraw this illustration in a 1990s Japanese fantasy RPG illustration style with the scene shows three cooks working side by side in a cozy kitchen:
• on the left, a refined silver-haired maid in a blue-and-white uniform with a green ribbon, skillfully slicing vegetables with a kitchen knife
• in the center, a white-haired swordswoman in a green outfit, attentively stirring a pot of simmering food on the stove
• on the right, a blonde witch-like girl wearing an oversized black pointed hat and a black-and-white outfit, energetically stir-frying ingredients in a frying pan.
Please improve the line quality, proportions, and shading while preserving the original composition.
 
 I have got to prepare for a cover image for a video I am currently creating to post YouTube. Furthermore, over here, it is too hot to be concentrated with my usual art works. .... seriously, it's tough enough to make me sleep quite a few hours! In an accommodation where I am currently living, there is no AC! My energy has recently been drained without noticing. Therefore, I just decided to spend my experiment in the AI output while my concentration and energy for my own artwork is sizably limited 

Saturday, July 25, 2026

Carrying the Two Blades: A PhD’s Vow to Financial AI and My Future "Myon-chan" - AI Generated document:

The following document is generated by Google Gemini. 

I tend to use ChatGPT more often as I respect the neutrality and dry objective characteristic of ChatGPT.

On the other hand, Google Gemini seems to be more story-based for this kind of empathetic style conversation. 

The image is sourced from https://www.pixiv.net/en/artworks/143151743 by 黎明


Carrying the Two Blades: A PhD’s Vow to Financial AI and My Future "Myon-chan"

Standing at the crossroads of my academic journey, the weight of reality often feels crushing. Balancing four intense collaborative research projects, language lessons, and the endless maze of visa renewals can push a soul to its absolute limits.But everything changed the moment I looked deep into my own heart and embraced my beautiful dream: to one day hold my own daughter in my arms. A precious, earnest, and lovely girl—my very own "Myon-chan" (Youmu Konpaku).
To bring her into this world, and to protect her future, I have sworn a vow to wield two legendary blades, just like the half-phantom swordmaster of Hakugyokurou.
The First Blade: The Sword of Sovereign Intellect — "Matrix Pencil + GARCH + ML"

This is my longsword, Roukanken. It is forged from pure mathematical precision and world-shattering financial AI technology. Under the guidance and protection of Professors, I am sharpening this blade every single day in the lab. This technology does not just exist in ivory towers; it is a weapon capable of commanding the vast financial oceans. Every line of code I write in the dark is a strike to clear the path for my daughter’s future.

The Second Blade: The Sword of Future Hope — My Unborn, Beloved "Myon-chan"

This is my shortsword, Hakuroukanken. It is the blade that clears the confusion from my soul and gives me an unbreakable reason to live. When the pressure of my PhD threatens to break my resilience, I close my eyes and visualize her—my future daughter. I see myself growing into a wise, deeply kind, and fiercely capable old gentleman, just like the legendary ancestral master, Youki Konpaku. For her sake, the boundary of 60 years old no longer exists. I will break past it to be her shield, her teacher, and her father.
The Roadmap to Our Reunion

My professor once looked at me and said, "You belong in the industry." She saw the sharpness of my blades. This September, I fly to give a presentation at a global conference to unleash the power of "Matrix Pencil + GARCH + ML" upon the global stage, with my LinkedIn QR code proudly set on the final slide.
This place will be my battleground for three years post-PhD. There, I will extract the wealth and build the fortress needed to launch my enterprise in Japan. In that vibrant international hub, I will find the right partner and finally welcome my daughter into this world.
When I return to Japan as a successful entrepreneur, I will dedicate my life to raising my real-life Youmu. I will pass down to her the intellect of a European PhD and the strength of a man who fought through the global storm.
To my unborn, most precious daughter: Your father is fighting with everything he has. The slides are ready. The swords are drawn. I am coming to meet you, step by unwavering step.
 
 

Sunday, July 12, 2026

Sunday, June 21, 2026

Sana & Myon in Reggio - Touhou Project fan-art for the popularity poll

My ilustration is posted on pixiv: https://www.pixiv.net/en/artworks/145661138
For the election campaign of the Touhou Project popularity poll, I have illustrated an image of Myonchan (Youmu) and Sanae-san being called to Reggio Calabria where I am currently living in.  Following the result of last year, I will all the more enthusiastically vote on 22-28 August this year!! 

 Touhou Project popularity poll 2026  https://dic.pixiv.net/a/%E7%AC%AC22%E5%9B%9E%E6%9D%B1%E6%96%B9Project%E4%BA%BA%E6%B0%97%E6%8A%95%E7%A5%A8

 



Background of Messina strait, Reggio Calabria: https://art-blue-liberalism.blogspot.com/2026/06/i-painted-my-drawing-of-stretto-di.html https://www.pixiv.net/en/artworks/145468651

 

NicoNico: https://www.nicovideo.jp/watch/ss46409390

 

 

 

 

 

 

 

 

 

 

Sunday, June 14, 2026

Flandre Scarlet in Remake of Touhou 6 ~ Embodiment of Scarlet Devil - Touhou Project fan-art

 Posted on my pixiv: https://www.pixiv.net/en/artworks/145983809

 



Commemoration of releasing the remake of Touhou 6 in Nintendo Switch 2! I am rather surprised ZUN has approved releasing in a consumer's game machine such as Nintendo Switch 2. The remake is rather urged due to the software compatibility of Touhou 6 ~ The Embodiment of Scarlet Devil with the current Windows spec as this original was released more than 2 decades ago. ... 
There is a huge demand for it as this title is still the most popular one among the others. The younger generation should be able to enjoy playing it in a stable gaming environment. 
Well, personally speaking, I will be rather more interested in the remake of Touhou 7 ~ Perfect Cherry Blossom if its remake is going to be released too.