Top 5 Oil and Gas Startup Investors in Japan in May 2026
A list of 5 angel investors and VC (Venture Capital) funds that invest in Oil and gas startups based in Japan. We rank investors based on the number of investments they made in Oil and gas companies from Japan. We update this investor list every month.
Top 5 Oil and Gas Startup Investors in Japan in May 2026
| Investor | Oil and Gas Japan investments |
|---|---|
| Yoshinori Fukushima | 1 |
| Kyoto Capital Partners | 1 |
| Seio Nagami | 1 |
| Coral Capital | 1 |
| Naoki Aoyagi | 1 |
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Yoshinori Fukushima
Yoshinori Fukushima - CEO @ LayerX
Show more...Investment focus
- Internet, Software, Marketing
- Seed, Angel, Series A
- Japan, Singapore
Portfolio highlights
- Jizai — Jizai is a provider of artificial intelligence technology, offering AI solutions, software-as-a-service products powered by AI, and robots that utilize AI capabilities for businesses across various industries. The company focuses on generative AI, large language models (LLMs), and robotics, offering customizable AI platforms and automation tools.It also engages in AI consulting and research collaborations.
- Amptalk — Amptalk is a software development firm specializing in operating automatic transcription and analysis of online business negotiations.
- PeopleX — PeopleX encourages and assists employees in their professional development.
Kyoto Capital Partners
Kyoto Capital Partners is an investment company affiliated with the Bank of Kyoto.
Show more...Investment focus
- Retail, Medical, Elder Care
- Series C, Funding Round
- Japan
Portfolio highlights
- Mui Lab — Mui is an aesthetically-pleasing wooden IoT device connected to a cloud service. By accessing information through natural wood, we can rethink a new type of lifestyle.
- Cizucu — Cizucu is a stock photo community that helps creators and brands to create photos.
- Xperisus — Xperisus provides solutions to government agencies and local governments, such as support for the development of value-added experiences.
Seio Nagami
Seio Nagami
Show more...Investment focus
- Task Management, SaaS, Legal
- Seed, Series A, Angel
- Japan
Portfolio highlights
- Enechain — enechain provides liquidity in Japan’s energy market by brokering OTC transactions of energy.
- Stock — Stock develops products that relieve the stress of sharing information from teams around the world.
- OVERFLOW — OVERFLOW provides consulting and recruitment services.
Coral Capital
Coral Capital is a seed stage venture capital firm in Japan.
Show more...Investment focus
- Software, Information Technology, SaaS
- Seed, Series A, Series B
- Japan, United States
Portfolio highlights
- Nstock — Nstock is specialized in developing SAAS based applications for ecosystem.
- STRACT — STRACT is a web platform that provides online platform, dating app, knowledge sharing cloud platform, and casual entertainment services.
- Oceanic Constellations, Inc — Oceanic Constellations empowers ocean visualization with a network of autonomous surface drones and advanced marine monitoring technology.
Naoki Aoyagi
Naoki Aoyagi is a Senior Vice President at GREE, Inc. and Chief Executive Officer of GREE International, Inc. He joined GREE, Inc. in March 2006 from Deutsche Bank, where he had specialized in tech and media sector IPOs and M&A advisory work. At GREE, Aoyagi oversaw the Company's partnership with KDDI and its IPO before leading thedevelopment of GREE’s global operations, a role he continues today. Aoyagi earned a bachelor's degree in policy management from Keio University in 2002.
Show more...Investment focus
- Fashion, Internet, Software
- Seed, Angel, Series A
- Japan
Portfolio highlights
- Enechain — enechain provides liquidity in Japan’s energy market by brokering OTC transactions of energy.
- Parallel — Parallel is the hangout app where you can enjoy games, videos, music, and more with friends.
- Holmes — Holmesis a cloud contract system to consistently carry out the creation, conclusion and management of contracts in the cloud.
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