Top 5 Oil and Gas Startup Investors in Japan in September 2025

Last updated: Sep 2025 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 September 2025

Investor	Oil and Gas Japan investments
Kyoto Capital Partners	1
Yoshinori Fukushima	1
Coral Capital	1
Seio Nagami	1
Naoki Aoyagi	1

Find investors that fund startups like yours. Automatically.

Our algorithm will find investors that invest in your industry, stage, and geography.

Investor list

Kyoto Capital Partners is an investment company affiliated with the Bank of Kyoto.

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.

Yoshinori Fukushima - CEO @ LayerX

Investment focus

Internet, Marketing, Media and Entertainment
Seed, Angel, Series A
Japan, Singapore

Portfolio highlights

Now Do — Now Do provides online growth revolution platform.
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.

Coral Capital is a seed stage venture capital firm in Japan.

Investment focus

Software, Information Technology, SaaS
Seed, Series A, Series B
Japan, United States

Portfolio highlights

MarqVision — Effortlessly discover and remove counterfeits to protect your sales and reputation.
CoLab — CoLab is a technology company that provides robotics, artificial intelligence solutions, and business consulting services.
NutmegLabs — NutmegLabs takes care of tourism and leisure by helping with online booking and digitizing the business. It was founded in 2019 and is based in San Francisco, California, United States.

Seio Nagami

Investment focus

Task Management, SaaS, Information Technology
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.

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.