AI Collaborative World Building
My Dress-Up Darling Simulator — Cosplay, Craft, and the Courage to Be Seen
A complete slice-of-life romance world generated by AI from My Dress-Up Darling — 22 atoms, character sprites, scene art, a playable visual novel, and an interactive studio. The world is not the end point, but the starting point of all creation.
A contemporary Japanese high-school world where traditional craft and pop-culture cosplay collide. Wakana Gojo, a reserved boy raised among hina dolls, spends his days quietly sewing in a dusty family workshop. Marin Kitagawa, the radiant gyaru idol of their class, lives for anime, games, and the dream of becoming every character she loves. When she discovers his hidden skill with needle and thread, she pulls him into the dazzling, terrifying world of costume-making.
Together they navigate school gossip, convention lights, exacting fabric, and the fragile courage it takes to love something others mock. At its core, this is a story about passion versus shame, the beauty found in patient craft, and the quiet revolution of breaking stereotypes — one stitch at a time.
Wakana’s lifelong shame about his “uncool” traditional craft collides with Marin’s fearless hunger to cosplay — forcing both to risk judgment, vulnerability, and the heart, as they prove that beauty lives wherever someone pours their soul into making.
Visual style: soft colored lineart, hand-drawn quality, soft pastel color palette. Kimi K3 GPT Image 2
World cover — Wakana Gojo sews at the workshop table while Marin Kitagawa watches over him, hina dolls and a gothic-lolita dress form in golden light, generated by GPT Image 2 in 16:9
7 characters generated from the canon of My Dress-Up Darling — a doll-maker hiding his gift, a gyaru who wears her obsessions without shame, and the cosplayers, friends, and family orbiting their collaboration. Each carries an independent backstory and a different claim on craft and courage. The sprites below were auto-generated by GPT Image 2 with backgrounds removed.
Wakana Gojo — the hina-doll craftsman who sews miracles in secret
Marin Kitagawa — the gyaru idol who dreams in cosplay
Marin Kitagawa · Warm — the smile that makes the workshop feel like home
CharactersWakana Gojo
A shy high-school boy who crafts traditional hina dolls and hides a prodigious gift for sewing until Marin drags him into the light.
CharactersMarin Kitagawa
The most popular gyaru in class, whose dazzling exterior hides a pure, obsessive love of anime, games, and cosplay.
Characters
Sajuna Inui
A celebrated junior-high cosplayer known online as Juju, whose exacting standards and hidden softness reshape Wakana and Marin’s craft.
Characters
Shinju Inui
Sajuna’s bright younger sister who adores big sister’s cosplays and becomes an unexpected bridge between pride, play, and family love.
Characters
Nowa Sugaya
Marin’s grounded classmate-friend who sees past gyaru sparkle and quietly supports the strange, tender partnership blooming around cosplay.
Characters
Grandfather Gojo
A master hina-doll craftsman who raised Wakana among wood, silk, and quiet pride, teaching that beauty is patience made visible.
Characters
Marin’s Mother
A free-spirited, often-absent parent whose hands-off love left Marin independent, glamorous, and hungry for people who stay.
From the cluttered Gojo Family Workshop to the roaring convention floor, every location is a stage where private passion becomes public beauty — a workshop that smells of silk and sawdust, a classroom where reputations harden, an apartment shrine to fiction, and shopping streets where courage is measured in meters of fabric.
Gojo Family Workshop — wooden shelves of doll forms, fabric rolls, and a sewing machine under warm lamp light
Municipal High School — empty classroom after hours, where Marin catches Wakana sewing alone
The costume reveal corner — fairy lights, a full-length mirror, and fabric scraps scattered like confetti
Locations
Gojo Family Workshop
A cluttered sanctuary of doll forms, silk scraps, and sewing machines where Wakana’s hidden world becomes the birthplace of cosplay miracles.
Locations
Municipal High School
An ordinary Japanese high school where reputations harden in hallways—and where a gyaru and a quiet boy begin an impossible collaboration under every staring eye.
Locations
Marin’s Apartment
A lived-in teen sanctuary stacked with figures, posters, and cosplay references—proof that the popular girl has always been a pilgrim of fiction.
Locations
Cosplay Convention Hall
A roaring temple of wigs, cameras, and courage where handmade costumes meet the crowd—and where craft is judged in flashes and cheers.
Locations
Fabric Town Streets
A dense shopping maze of bolts, trims, and specialty cloth where serious costume dreams are measured in meters and courage.
Locations
Riverside Photoshoot Park
A green public park used for outdoor cosplay photography, where wind, light, and passersby test both costume and confidence.
The Sewing Machine Encounter
Marin catches Wakana sewing alone at school and, instead of laughing, recognizes the exact miracle she has been praying for.
First Costume Completed
After sleepless nights in the workshop, Wakana finishes Marin’s first serious cosplay, and she becomes the character she loves before his eyes.
Convention Debut
Marin wears Wakana’s work onto a crowded cosplay floor, where cameras, cheers, and strangers’ awe test everything they have built in secret.
The Juju Commission
Famous cosplayer Sajuna Inui seeks out Wakana’s skill, dragging the pair into a higher league of standards, rivalry, and unexpected friendship.
Black Lobelia Ordeal
A punishingly complex costume arc forces Wakana and Marin to confront perfectionism, exhaustion, and the cost of loving a craft without mercy.
Hearts Without Patterns
Beyond costumes and deadlines, Wakana and Marin finally face the feeling that no sewing pattern can contain—the confession that craft has become love.
Craft & Culture
Hina Doll Tradition
A centuries-old Japanese craft of ceremonial dolls whose faces, layers, and dignity shape Wakana’s entire philosophy of making.
Craft & Culture
Cosplay as Devotion
In this world, cosplay is not mere costume play—it is embodied fandom, a public vow to honor a character through accurate, loving craft.
Craft & Culture
The Shame of Soft Hands
An unspoken social pressure in their school world that mocks boys for delicate crafts and girls for “too much” otaku passion—until making becomes rebellion.
World Rules
Hina Doll Tradition
A centuries-old craft of ceremonial dolls whose faces, layers, and dignity shape Wakana’s entire philosophy of making — the standard every costume is measured against.
Cosplay as Devotion
Cosplay is not mere costume play — it is embodied fandom, a public vow to honor a character through accurate, loving craft.
The Shame of Soft Hands
An unspoken social pressure that mocks boys for delicate crafts and girls for “too much” otaku passion — until making becomes rebellion.
Thirty-three works have been generated from this world — 6 character sprites with expression variants, 4 scene backgrounds and title art, 22 atom cover arts, and 1 playable visual novel game, Cosplay Dream. The world is the source; works are its branches.
Cosplay Dream — a playable visual novel: measure, sew, and step onto the convention stage as Wakana and Marin, powered by real-time LLM narrative
Title screen — the family workshop at golden hour, waiting for a story to begin
Gojo Family Workshop — the dusty sanctuary where cosplay miracles are born
Municipal High School — where Marin discovers Wakana sewing alone
The costume reveal — fairy lights, mirror, and confetti of fabric scraps
This world is public. You can Fork it — inherit all 22 atoms, every character, location, event, and craft, rewrite what you want, and publish your own version.
Give Marin a rival cosplayer no one saw coming. Swap the hina-doll workshop for a tailoring atelier. Turn the convention debut into a runway battle or a backstage heist. The world is your asset library — rewriting is creation.
Collaborative workflow
Fork world → Edit atom cards → Generate new games/videos/assets → Publish → Others can Fork your version
World building · TextKimi K3Claude Opus 5
One sentence → 22 atoms: characters, locations, events, and the twin crafts of hina-doll making and cosplay.
Art generation · ImageGPT Image 2BirefNet
Atom covers, character sprites (auto background-removed), scene backgrounds, and the 16:9 world cover.
In-game dialogue · Real-time narrativeDeepSeek V3Kimi K3
Real-time LLM writes the visual novel’s narrative in character voice; choices track Bond, Craft, and Courage toward the confession ending.
This is the actual studio workspace for the My Dress-Up Darling world — the Board view with every atom card, the Gallery of generated art and works, and a character detail overlay. The world is not the end point, but the starting point of all creation.
In Neta Studio, a world is the beginning of everything. A world contains characters, locations, events, and rules — all generated by AI from a single sentence, all referenceable, rewritable, and expandable.
A world is not a game, a video or an image. A world is the source of all of these: from the same world, you can generate visual novel games, character sprites, scene backgrounds, and video assets — each inheriting the same worldview, the same settings, the same balance of thread and courage.
World → Game
Select a storyline from world cards, AI auto-writes game logic, generates art, builds a playable visual novel like Cosplay Dream.
World → Video
Generate dynamic videos from world characters and scenes — costume reveals, convention debuts, and sewing montages across the workshop and the stage.
World → Assets
Each character auto-generates a sprite, each location auto-generates a background. The world itself is an asset library.
Create from This World
Inherit 22 atoms, rewrite what you want, sew your own love story.
World: My Dress-Up Darling SimulatorType: Anime World · Slice-of-Life RomanceAtoms: 22 (Characters 7 · Locations 6 · Events 6 · Craft & Culture 3)Works: 33 (Game 1 · Sprites 6 · Backgrounds 4 · Covers 22)Assets: 4 (Cover 1 · Studio 3)
