AI-NATIVE PRODUCT STUDIO · TOKYO

Work worth signing.

G Productions Japan is an AI-native product studio in Tokyo. A small senior team takes products from the first decision through launch and operation, supported by a coordinated team of AI agents. We make work we are proud to sign.

EST. 2026 · TOKYO · JAPAN

Trade name G Productions Japan LLC
Incorporated June 4, 2026
Corporate number 5011003024600
Head office Meguro, Tokyo

Film / ブランドフィルム

We finish

Koryo is the pressroom word for the moment a proof is approved to print. This film is how we work, in 30 seconds.

30 SEC / ENGLISH NARRATION / JAPANESE SUBTITLES

0:00 / 0:30

Philosophy

Japan's creativity, finished, signed, and shipped to the world

Generative AI made speed common. Our bet is what comes after speed: software built with enough care to be treated as work, not just delivered as output.

Right now we are focused on finding underused technology and intellectual property in Japan, turning it into products, and shipping those products into the world. The Purpose stays stable. The Mission moves when the operating focus changes.

We finish. Running is not finished. We finish to a standard we can sign.
Design is how it works. Design is more than appearance. It shapes behavior, language, and judgment.
Sign your work. Do not wait for instructions. Make the call and own the outcome.
AI is a team, not a tool. AI explores and iterates. People set the direction and own the quality.

Read our philosophy

STRATEGY DESIGN CODE INTO REGISTER SIGNED
Gloved hands aligning cyan, magenta, and yellow film separations into register over a lightbox
PLATE PROGRAM / 刷版 src/scripts/press-gl.ts · WebGL2
// press halftone screening, on the GPU:// four plates in register, C 15° M 75° Y 0° K 45°const vec3 INK_C = vec3(0.000, 0.643, 0.894);  #00A4E4const vec3 INK_M = vec3(0.910, 0.067, 0.498);  #E8117Fconst vec3 INK_Y = vec3(1.000, 0.769, 0.000);  #FFC400 float plateDot(vec2 px, float ang, float per, float v) {  float s = sin(ang), c = cos(ang);  vec2  p = mat2(c, -s, s, c) * px / per;   // rotate the screen  float d = length(fract(p) - 0.5);         // place in the cell  float r = sqrt(clamp(v, 0., 1.)) * 0.72;  // coverage, as a dot  float aa = fwidth(d) * 1.25;  return 1.0 - smoothstep(r - aa, r + aa, d);}
Live proof: the tricolor period mark being screened into CMYK halftone

LIVE PROOF / 刷り出し

u_p 0.00 · u_scroll +0.00

A fragment shader reproducing press halftone screening on the GPU. The proof on the right is the same program, running now. Written with orchestrated AI agents, proofed by a human eye. A small specimen of design and engineering finished by the same hands.

AI Agents / 編成

We orchestrate AI agents around the work

We identify the workflows that matter, design purpose-built agents for them, and orchestrate those agents with the people doing the work. We implement the system, evaluate it in practice, and keep improving it as the work evolves.

AGENTS EXPLORE, ITERATE, AND PRODUCE HUMANS DECIDE EXPLORE BUILD CHECK HUMANS FINISH EVALUATE AND IMPROVE
  • SALES 営業
  • MARKETING マーケティング
  • FINANCE 経理・財務
  • LEGAL & IP 法務・知財
  • HR & HIRING 人事・採用
  • SUPPORT カスタマーサポート
  • RESEARCH リサーチ
  • EDITORIAL 編集・執筆
  • DESIGN デザイン
  • ENGINEERING 開発
  • DATA データ分析
  • OPERATIONS 運用・監視

Services

From the first decision through operation

PLAN DESIGN BUILD OPERATE
  1. Product development

    We plan, design, build, launch, and operate web, mobile, and cloud products. Working prototypes make decisions concrete. We test early, release in focused increments, and improve from evidence.

  2. AI agent development and technical advisory

    We advise on technical direction, development teams, and practical AI adoption. When useful, we also design and implement AI agents, then evaluate and improve them in operation.

  3. IP technology and R&D

    We research and develop AI systems for patent and intellectual property work, including document analysis, valuation, and tools that support expert judgment.

  4. Studio businesses

    KAISHA NOW for company operations, Gathrly and here.dj for event tech, and the Prism Collective music label. Three businesses of our own, whose lessons flow back into client work.

Other fields Our articles of incorporation also cover design, translation and localization, marketing and PR, events, media, publishing, music, investment, and cross-border business development. For each inquiry, we confirm the expertise and delivery scope we can provide.

Services in detail

Stack / 常用機材

Use the best tools. Not using them costs more.

INFRA / 基盤
  • AWS
  • Google Cloud
  • Cloudflare
  • Vercel
AI AGENTS / 編成
  • Claude Code
  • Codex
  • Cursor
PLATFORM / 開発
  • GitHub
  • TanStack
  • Astro
  • Convex
  • PlanetScale
  • Turso

All marks are the property of their respective owners.

Work

Selected work

Team

One team of people and AI

Development runs on a core formation of six specialist lanes under one director, and outside specialists join for projects that call for them. The members are people and AI. We do not say which is which, because the mix of hands has no bearing on the quality of what we deliver. All-nighters and overtime have not gone away. Some nights it is people doing the sweating, some nights it is AI. What sets the split is neither title nor seniority, but skill at orchestrating AI: the better the human, the more AI they command. The best people start their mornings reading reports from AI that worked while they slept.

Founding member 1
Contract specialists 6 on average
AI members 6 lanes, always on
  1. Producer & Director, Founder 制作総指揮・代表社員 Günther Brunner / ブルンナー・グンタ Sets the direction, owns the quality, signs last.
  2. Project Management プロジェクトマネジメント Schedules, priorities, and the quality bar.
  3. Frontend Engineering フロントエンドエンジニアリング Web implementation, performance, accessibility.
  4. AI Research AIリサーチ Model evaluation, agent design, generation pipelines.
  5. Interface Design インターフェイスデザイン UI/UX, information architecture, prototyping.
  6. Operations & Infrastructure バックエンド・インフラ APIs, data, and cloud operations.
  7. Design Direction デザインディレクション Brand, art direction, the visual whole.

Read the marks top to bottom: G. PERIOD. The same way the logo reads.

AI is no longer cheap labor. Run the latest generation of models hard and the bill rivals a specialist's salary. We pay it anyway, not because AI is cheap, but because it does the best work. That spend is an investment in the team, not the price of tools.

Representative

Founder

Founder / Design Engineer

Günther Brunner

ブルンナー・グンタ

Günther is a design engineer who came to Japan in 2007 as a MEXT government scholar. He has spent more than 15 years building products in Japan's technology industry. His open-source project OpenSTF has more than 13,000 GitHub stars and is used by more than 200 organizations worldwide, including Netflix and Alibaba. His experience includes public-sector systems for Japan's National Tax Agency, JICA, and the Ministry of Internal Affairs and Communications, as well as AI product development at major technology companies. He is a permanent resident of Japan and works in Japanese (JLPT N1), English, and Spanish.

Top-down view of a work desk: keyboard, annotated proof with pencil, CMY ink cards, coffee, notebook

News

Announcements

  • We published our corporate philosophy
  • We are hiring
  • We launched our corporate website

All news

Company

Corporate profile

Company name G Productions Japan合同会社
English name G Productions Japan LLC
Incorporated June 4, 2026
Capital JPY 300,000
Representative Günther Brunner (ブルンナー・グンタ)
Head office 4-4-12 Aobadai, Meguro-ku, Tokyo 153-0042, Japan
Phone 03-6822-6520
Corporate number 5011003024600
Invoice reg. no. T5011003024600 Qualified invoice issuer
Fiscal year June 1 – May 31
Business
  • Software, IT systems, and cloud services (SaaS): planning, development, operation, and maintenance
  • Artificial intelligence (AI): research and development, implementation, adoption support, and consulting
  • Technical advisory, support for building engineering teams, and digital transformation (DX)
  • UI/UX, product, and brand design
  • Websites, mobile applications, and games: planning, development, and operation
  • Translation, interpreting, localization, and multilingual content production
  • Marketing, branding, public relations, market research, and management consulting
  • Events, conferences, and music festivals: planning, production, and operation, including sound, lighting, and spatial design
  • Video, audio, photography, publishing, and social media: planning, production, distribution, and rights management
  • Books, e-books, and manga publishing; music production, distribution, and copyright management
  • Software and cloud services supporting company formation and registration filings
  • Venture investment and support; fundraising, investor relations, and cross-border business development
The above is a selection of the 22 business objectives set out in Article 2 of our articles of incorporation.
Principal clients IP Rich Inc.

Message and history

Careers

Work worth signing, together

We are hiring people who want to carry products from strategy through operation, use AI thoughtfully, and own the quality of what ships. Working arrangements are agreed for each role and project. Scheduled in-person meetings can be held at THE N3 in Aobadai, Meguro.

  • Remote Work fully remote from anywhere in Japan.
  • In-person collaboration Scheduled in-person meetings can be held at THE N3 in Aobadai, Meguro.
  • Flexible arrangements We agree on the balance of remote and in-person collaboration for each role and project.
Two hands passing a finished proof sheet across a desk; the three-band period mark printed on its corner

See open roles

Contact

Get in touch

For project inquiries, estimates, or press questions, email us. We usually reply within one business day.

contact@g-productions.studio