Quantum Solutions Co., Ltd.
Category: AI Infrastructure
Tokyo Stock Exchange Standard Market-listed (2338) Japanese AI company building a domestic NVIDIA B300 GPU-based AI data center (AIDC) business, alongside AI games, enterprise AI solutions, and a Bitcoin/Ethereum digital asset treasury. Quantum Solutions Co., Ltd. was founded in 1999. The company is led by Umeka Osawa (大澤梅嘉). Based in Chiyoda-ku, Tokyo, Japan. Team size: 51-100. Total funding raised: $20.8M. Latest round: Post-IPO. Key investors include Blackwell Cloud Co., Limited, CVI Investments, Inc., ARK Invest, Susquehanna International Group (SIG), Integrated Capital (Asia).
- Founded
- 1999
- Headquarters
- Chiyoda-ku, Tokyo, Japan
- Team size
- 51-100
- Total funding
- $20.8M
Value proposition
Building Japan's first high-density GPU computing center using NVIDIA B300 GPU servers to deliver GPU computing, AI infrastructure, and data center services to enterprises seeking scalable AI capabilities.
Products and solutions
AI Infrastructure/AIDC (NVIDIA B300 GPU servers, high-density data center capacity, AI computing resources, cloud AI solutions), AI Games (mobile game publishing/distribution, e.g. SANCTUS SENKI – GYEE), AI Enterprise Solutions, Wellness, Digital Asset Treasury (BTC/ETH reserve strategy).
Unique value
A publicly-listed Japanese company (TSE 2338) pivoting to become a domestic AI data center operator, securing NVIDIA B300 GPU supply and high-density data center capacity (via Telstra Japan/Equinix) to offer GPU computing and AI infrastructure services in Japan.
Target customer
Japanese enterprises and corporate customers seeking scalable AI computing resources, GPU server deployment, high-density data center capacity, and cloud-based AI solutions.
Industries served
AI Infrastructure / Data Centers, AI Gaming, Enterprise AI Solutions, Digital Assets / Blockchain
Technology advantage
NVIDIA B300 (Blackwell Ultra) GPU cluster deployment; ~3MW high-density data center capacity secured via Telstra Japan and Equinix; listed-company capital access enabling GPU supply reservations (32 servers initial); strategic partnerships with ARK Invest and Susquehanna (SIG).
How they differentiate
As a TSE-listed company, Quantum Solutions leverages public capital markets and strategic institutional investors (ARK Invest, SIG) to fund GPU capacity, differentiating from pure private GPU cloud startups. It is positioning itself as a domestic Japanese AIDC operator with NVIDIA B300 Blackwell Ultra GPUs.
Main competitors
Sakura Internet (さくらインターネット), GMO Internet Group (GMO GPU Cloud), KDDI, SoftBank Corp., Highreso, Rutilea
Key partnerships
Telstra Japan (3MW high-density data center capacity; Jul 2026 basic terms), Equinix (capacity via Telstra Japan), ARK Invest and Susquehanna International Group (SIG) (strategic investment partners, Sep/Oct 2025), Integrated Capital (Asia) (finance collaboration MOU), TurboAi (integrated AI cloud solutions), Blackwell Cloud Co., Limited and CVI Investments (Aug 2026 funding subscribers), Ubitus K.K. (2024 AIDC MOU — expired Nov 2024 without formal CSA per Mar 2026 disclosure)
Major milestones
1999 founded as ZION LLC, 2002 listed on TSE Mothers, 2021 renamed Quantum Solutions (formerly Bit One Group), 2023 pivoted to AI business, 2025 launched Bitcoin reserve asset business and onboarded ARK Invest & SIG as strategic investment partners, 2026 secured ~3MW data center capacity with Telstra Japan/Equinix and completed ¥494M payment for NVIDIA B300 GPU AIDC buildout.
Growth metrics
73 employees (consolidated); capital ¥4,536 million; TSE Standard Market listed (code 2338)
Market positioning
Early-stage entrant in Japan's rapidly growing AI data center / GPU cloud market, competing with established players like Sakura Internet and GMO while leveraging its listed status and institutional partnerships to secure GPU supply and data center capacity.
Geographic focus
Japan (domestic AIDC), with Asia Pacific reach
About Umeka Osawa (大澤梅嘉)
Ex-EY New Japan Audit Corporation (新日本監査法人) Executive Director; Ex-PwC Japan China Business Support Office Head; Completed graduate studies at Chuo University Graduate School (中大院修了). Appointed CEO May 2026.
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Official website: https://www.quantum-s.co.jp/en
