ReYuu Japan Inc.
Category: AI Infrastructure
Japan's leading IT reuse company (smartphones, tablets, PCs) pivoting into AI infrastructure — GPU server secondary market, liquid cooling, and AI data center lifecycle services. ReYuu Japan Inc. was founded in 1988. The company is led by Ryo Taniguchi (谷口 領). Based in Osaka / Tokyo, Japan. Team size: 51-200. Total funding raised: $1.03M. Latest round: Debt. Key investors include Seacastle Singapore Pte. Ltd., AI Fusion Capital Group (parent), Showcase Inc. / Showcase Capital, Universal Digital Inc., Kanematsu Communications, Long Corridor Asset Management (LCAO / MAP246 / BEMAP — CB program 2026).
- Founded
- 1988
- Headquarters
- Osaka / Tokyo, Japan
- Team size
- 51-200
- Total funding
- $1.03M
Value proposition
ReYuu Japan is a Tokyo Stock Exchange-listed IT reuse company that buys, refurbishes, and resells used mobile devices (smartphones, tablets, PCs). In 2026, it launched an AI infrastructure business leveraging its IT procurement/refurbishment expertise to enter the GPU server secondary market, AI data center lifecycle services, and liquid cooling solutions — partnering with Super Micro and KAYTUS JAPAN.
Products and solutions
1) Reuse Mobile — buy/sell/rental of refurbished smartphones, tablets, PCs, 2) Integrated Subscription Service — devices + SaaS, 3) Online Store (ReYuu Store, Amazon, Rakuten, Mercari Shops, SHEIN), 4) Corporate Rental Service — devices + SIM, 5) AI Infrastructure — GPU server secondary market, liquid cooling, AI data center lifecycle via AI Data Partners JV (30%), 6) Cybersecurity solutions via consolidated subsidiary Next Security (Aug 2026)
Unique value
Only publicly listed Japanese company bridging the IT reuse market with the AI infrastructure secondary market — combining 35+ years of IT device procurement/refurbishment expertise with new AI server lifecycle services (introduction, operation, upgrade, redistribution).
Target customer
MVNO operators, mobile carriers, telecom agents, corporate enterprises (B2B wholesale), general consumers (B2C via online stores), and AI data center operators (new AI infra segment)
Industries served
Telecommunications, IT/Device Reuse, E-commerce, AI Infrastructure / Data Centers
Technology advantage
35+ years of IT device procurement, refurbishment, quality control, and redistribution expertise; ISO/IEC 27001 certified Mobile Refurbish Center; First certified "Reuse Mobile Business Operator" in Japan (RMJ); AI-powered visual inspection system for device grading; Established global supply chain (Hong Kong, Dubai); Listed on TSE providing capital markets access.
How they differentiate
Unlike general reuse retailers, ReYuu Japan is a TSE-listed company with a B2B wholesale focus (MVNOs, carriers, enterprises) and a newly launched AI infrastructure division targeting the GPU server secondary market — a unique hybrid of IT reuse + AI data center lifecycle services not offered by traditional Japanese reuse competitors.
Main competitors
Sofmap (リユースモバイル); Book Off Corporation (ブックオフ); Inversenet (インバースネット)
Key partnerships
Super Micro Computer, Inc. (MOU AI infra, May 2026), KAYTUS JAPAN (MOU AI server/liquid cooling, AI Data Partners (JV 30% stake with abc/Image One/Wintest/FD/Birdman for AI data centers, established Jun 2026), LENDEX (business alliance AI infra/crowdfunding, Jun 2026), Next Security (49% consolidated subsidiary, completed Aug 2026), AiPro (smartphone repair — share transfer contract Aug 2026, closing planned Oct 2026), Kanematsu Communications, Showcase Inc., AI Fusion Capital Group (parent), Seacastle Singapore
Notable customers
Amazon Japan; AEON Retail; Softbank Corp.; Rakuten Group; Yahoo Japan; Internet Initiative Japan (IIJ); OPTAGE; Kanematsu Communications; QTnet; Bell-Park; ZOA Corporation
Major milestones
1988: Founded as Nippon Telephone Inc., 2005: JASDAQ/TSE listing, 2008: Used mobile (ecoTAN), 2017: Co-founded Reuse Mobile Japan, 2022: Showcase capital alliance, 2024: Rebranded ReYuu Japan, AI Fusion Capital parent, 2025: Seacastle 33.21%, Universal Digital investment, 2026-03: AI Strategy Office & AI infra entry, 2026-05: Super Micro & KAYTUS MOUs, 2026-05/06: AI Data Partners JV (30%) established
Growth metrics
FY2025 revenue: ¥6.259B (~$41.7M), +32.3% YoY; FY2026 guidance (Jul 2026 revision): revenue ¥8.4B, ordinary loss ¥1.1B; 1H FY2026 revenue ¥4.721B (+58.8% YoY); Market cap ~¥2.12B (~$14M) as of Sep 2026; TSE Standard (9425)
Market positioning
Mid-cap listed IT reuse company (FY2025 revenue ¥6.26B / ~$42M) pivoting into the fast-growing AI infrastructure secondary market in Japan. Positioned as a niche player bridging IT asset disposition (ITAD) with AI compute lifecycle management.
Geographic focus
Japan (primary), with global procurement/sales via Hong Kong and Dubai subsidiaries
Patents and IP
Trademark: "サイバーポート" (Cyber Port) registered 1999; Privacy Mark certified; ISO/IEC 27001 certified
About Ryo Taniguchi (谷口 領)
ReYuu Japan Director CFO & CSO (Jan–Jun 2026); Planning & Administration Dept. GM (Sep 2025–Jan 2026); W2 Inc. (2025); Geeks Inc. (2023); Mitsubishi UFJ Morgan Stanley Securities (2007–); KOBE Securities / Invast Securities (2005–). Education: Aoyama Gakuin University (Economics).
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Official website: https://www.reyuu-japan.com/