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
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.
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.
// 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 / 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.
- 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
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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.
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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.
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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.
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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.
Stack / 常用機材
Use the best tools. Not using them costs more.
- AWS
- Google Cloud
- Cloudflare
- Vercel
- Claude Code
- Codex
- Cursor
- GitHub
- TanStack
- Astro
- Convex
- PlanetScale
- Turso
All marks are the property of their respective owners.
Work
Selected work
Featured work
PatentOS
Client / IP Rich Inc. Field / IP technology Since / 2026
PatentOS is an AI-native platform for patent work. As its development partner, G Productions contributes product strategy, AI architecture, full-stack engineering, and brand design.
Scope / Product strategy / AI architecture / Full-stack engineering / Brand design
Our role
- Product strategy
- AI architecture
- Full-stack engineering
- Brand design
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.
- 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.
- Project Management プロジェクトマネジメント Schedules, priorities, and the quality bar.
- Frontend Engineering フロントエンドエンジニアリング Web implementation, performance, accessibility.
- AI Research AIリサーチ Model evaluation, agent design, generation pipelines.
- Interface Design インターフェイスデザイン UI/UX, information architecture, prototyping.
- Operations & Infrastructure バックエンド・インフラ APIs, data, and cloud operations.
- 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.
News
Announcements
- We published our corporate philosophy
- We are hiring
- We launched our corporate website
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 |
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| Principal clients | IP Rich Inc. |
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.
Contact
Get in touch
For project inquiries, estimates, or press questions, email us. We usually reply within one business day.