Top 15 Social Network Angel Investors in Japan (August 2026)
For AI agents: Short investor table (Markdown), Detailed investor list (Markdown)
| Investor | Relevant Deals | Geography | Stage | Focus | Round Size |
|---|---|---|---|---|---|
|
Kensuke Furukawa
Angel
|
3 | Japan | Seed, Angel | Content, SNS, Internet | $690k–$33M |
|
Hironao Kunimitsu
Angel
|
2 | Japan, United States | Seed, Angel | Virtual Reality, Content, Internet | $320k–$26M |
|
Ryo Ishizuka
Angel
|
1 | United States, Japan | Seed, Series A | SNS, AgTech, Beauty | $700k–$33M |
|
Kazuma Ieiri
Angel
|
1 | Japan | Seed, Angel, Series A | Content, Fashion, FinTech | $380k–$47M |
|
Yusuke Sato
Angel
|
1 | Japan, Indonesia, United States | Seed, Angel | Internet, Content, Software | $320k–$43M |
|
Yuma Umeda
Angel
|
1 | Japan | Seed, Angel, Series A | Gift, AgTech, Internet | $836k–$17M |
|
Yuto Nagatomo
Angel
|
1 | Japan | Seed, Angel, Venture - Series Unknown | Health Care, SNS, Sales | $4.3M–$33M |
|
Ayataro Nakagawa
Angel
|
1 | Japan, Hong Kong, United States | Seed, Angel | Internet, Software, Content | $425k–$26M |
|
Kazuhiro Ishikura
Angel
|
1 | Japan | Seed, Angel, Pre-Seed | Beauty, Events, Apparel | $453k–$28M |
|
Kentaro Ruichi
Angel
|
1 | Japan | Seed | Content, Video Games, Social Network | |
|
Yasuyuki Kin
Angel
|
1 | Japan | Seed, Angel, Pre-Seed | Media and Entertainment, Recruiting, Career Planning | $1.4M–$14M |
|
Otomi Tomohiro
Angel
|
1 | Japan | Seed, Angel | Travel, Tourism, Recruiting | $549k–$11M |
|
Hiroaki Kitano
Angel
|
1 | Japan, United States | Seed, Angel | Health Care, Fitness, Medical | $3.3M–$43M |
|
Masao Ito
Angel
|
1 | Japan | Seed, Series A, Angel | Content, Social Media, Information Technology | $661k–$17M |
|
Kamata Tomihisa
Angel
|
1 | Japan, United States | Seed, Angel | Fitness, Medical, Genetics | |
| Access all 21 angel investors in Japan Social Network startups. | |||||
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Hironao Kunimitsu was born in Hyogo, Japan. After graduating from Okayama High School, he spent several years traveling around the world. He visited over 30 countries including the US, China, India, Canada, and others in Central and South America.In 1996 he entered Fudan University in China, and then later went on to study at Santa MonicaCollege in the US. In 2004 he entered Atmovie Inc. where he produced movies and televised dramas, and was appointed company director in the same year. In 2007 he founded gumi Inc., and it started listing on first section of the Tokyo Stock Exchange in December, 2014.
Show more...Investment focus
- Industry: Virtual Reality, Content, Internet
- Stage:Seed, Angel
- Geography: Japan, United States
Investor stats
- Total investments: 19
- Round size: Seed $2.6M–$11M; Angel $320k–$26M
- Lead/follow: 16% lead, 84% follow
Portfolio highlights
- 1SEC — 1sec is a virtual influencers in Japan,develop in-house and management. IMPACT to CEKAI in 1 second. Based on the concept of making CEKAI happy in one second, US based in Los Angeles and Japan, based in Tokyo, virtual influencers × AI, fashion & music & The company will develop a number of CEKAI's first and first projects in Japan inthe field of enter teignment.
- Gatari — Gatari specializes in the planning, development, and operation of XR services. Auris, a futuristic audio guide, and Vismuth, a camera app that transforms reality into a story, are two of Gatari's services.
- Thirdverse — Thirdverse is a web3 and virtual reality game studio that develops and operates multiplayer virtual reality games. The company combines the technology of blockchain to create an economic zone and a virtual world, enabling customers to experience seamless gameplay in a virtual environment.Thirdverse was founded in 2016 and is headquartered nTokyo, Japan.
Ryo Ishizuka is the co-founder and CEO of Mercari, a hassle-free peer-to-peer mobile marketplace app. After founding the company in Japan and following its successful launch, Ryo leads Mercari's international expansion as the company grows globally. Prior to founding Mercari, Ryo was the Chief Architect at RockYou, a Silicon Valley startupbacked by Sequoia. At RockYou, he was responsible for developing the core infrastructures to support its rapidly growing traffic, serving more than 20 billion PVs per month. He later served as COO at RockYou Asia to lead its Asian expansion. Born in Japan and raised in the US, Ryo has spent his life constantly moving and building bridges between the two countries.
Show more...Investment focus
- Industry: SNS, AgTech, Beauty
- Stage:Seed, Series A
- Geography: United States, Japan
Investor stats
- Total investments: 7
- Round size: Seed $700k–$33M; Series A $6.8M–$10M
- Lead/follow: 14% lead, 86% follow
Portfolio highlights
- Sagri — Sagri is developing agriculture software for experienced farmers.
- Omneky — Omneky - Omnichannel Creative Orchestration
- Flyp — Grow resale business with easy access to inventory and free automation tools. Join 10,000+ resellers today.
Born in 1978 and raised in Fukuoka prefecture, Kazuma founded paperboy&co. inc. (currently GMO Pepabo) and went on to become the youngest CEO ever (at the time) to take a company public in Japan by taking paperboy&co. public on the JASDAQ Japanese stock exchange. After leaving paperboy&co, he continued his startup trail by foundingBASE, CAMPFIRE, and XIMERA. Kazuma also dabbled in the food services industry via the founding of On The Corner (a cafe) and is active in the startup investment scene. He also started the Liverty-house project which attempts to create shared housing for young people in need.
Show more...Investment focus
- Industry: Content, Fashion, FinTech
- Stage:Seed, Angel, Series A
- Geography: Japan
Investor stats
- Total investments: 18
- Round size: Seed $380k–$41M; Angel $1M–$7.4M; Series A $3.5M–$47M
- Lead/follow: 6% lead, 94% follow
Portfolio highlights
- Taliki — Taliki is a Coworking Space Operates Social Entrepreneurs Development Support for Intrepreneur Development.
- One Nova — One Nova (ワンノバ) is a lifestyle brand and online platform that offers a range of innerwear products, such as men's boxers.
- Vivid Garden — vivid garden is an Agriculture company.
Yusuke Sato is the Co-Representative and Co-Founder of Pulit.
Show more...Investment focus
- Industry: Internet, Content, Software
- Stage:Seed, Angel
- Geography: Japan, Indonesia, United States
Investor stats
- Total investments: 59
- Round size: Seed $3.3M–$41M; Angel $320k–$43M
- Lead/follow: 0% lead, 100% follow
Portfolio highlights
- Kaimak — Kaymak is a recruitment platform that focuses on creating a recruitment website, planning a recruitment strategy, and managing candidates.
- Meetscare — Meetscare provides correct information and supports the self-awareness of all people involved in care. The company provides a wealth of information to ensure optimal care and create a mechanism for the realization. Users can make a telephone consultation and web diagnosis and search for free information using the system.Meetscare was founded on2016 and is headquartered in Arakawa, Tokyo.
- Driver Technologies — Driver Technologies is a cloud logistics platform provider. It provides a solution for driver matching and cargo vehicle demands.
Yuma Umeda
Show more...Investment focus
- Industry: Gift, AgTech, Internet
- Stage:Seed, Angel, Series A
- Geography: Japan
Investor stats
- Total investments: 5
- Round size: Seed $836k–$17M
- Lead/follow: 0% lead, 100% follow
Portfolio highlights
- Xmart — Xmart is a Costs can be reduced by simply sending invoices for one month.
- AGRI SMILE — AGRI SMILE employs technology to create sustainable agriculture, communities, and production areas. It promotes agricultural industry development by combining software as a tool for accumulating and inheriting technology with science, which creates new technology based on accumulated data. They seeks to establish a cultivation system that is inharmony with the environment and the region, allowing agricultural workers to live a rich life both financially and spiritually.
- Another works — Another works is a internet platform & the industry's first service that allows you to directly approach the talent you are interested in from a database of a variety of ready-to-work and multi-tasking personnel. You can also use the performance fee for free.
Yuto Nagatomo - President, CEO, and Founder @ Cuore
Show more...Investment focus
- Industry: Health Care, SNS, Sales
- Stage:Seed, Angel, Venture - Series Unknown
- Geography: Japan
Investor stats
- Total investments: 9
- Round size: Seed $4.3M–$33M; Angel $7.1M–$26M
- Lead/follow: 0% lead, 100% follow
Portfolio highlights
- MIL — MIL is a marketing company it can be used for a wide range of video marketing such as video commerce , O2O measures , recruitment videos , and landing videos.
- Now Do — Now Do provides online growth revolution platform.
- Saurus Japan — SAURUS JAPAN is an online store that sells sports supplements. They provide athletes with protein and amino acids. They provide quality raw materials and formulations with a focus on safety and security. Their nutrients serve the purpose that professionals need.
2011 At university, participated in the founding period as a director of Atcole Co., Ltd., and started the web service experience.2012 Founded Peroli Co., Ltd., which operates a curation platform for women "MERY" .2014 Founded Peroli Co., Ltd. Sold to DeNA 2015 Jointly established Tokyo Founders Fund as an angel investor and startedinvesting in startups in Japan and overseas 2019 Appointed outside director of FIREBUG Co., Ltd.
Show more...Investment focus
- Industry: Internet, Software, Content
- Stage:Seed, Angel
- Geography: Japan, Hong Kong, United States
Investor stats
- Total investments: 43
- Round size: Seed $2.5M–$24M; Angel $425k–$26M
- Lead/follow: 9% lead, 91% follow
Portfolio highlights
- Mepple — Mepple is planning, developing, and operating internet services.
- For you — For you is a comprehensive Advertising agency business specializing in SNS.
- SPORTS CROWN — SPORTS CROWN engages in the development and operation of fantasy sports.
Kazuhiro Ishikura served as the head of the Akatsuki Business Management Department in 2013 and as a corporate auditor of Akatsuki in 2014, contributing to the company's listing on the TSE Mothers and TSE 1st sections. Appointed 3minute CFO in 2015, engaged in business start-up and organizational design, and succeeded in large-scale M & Adeal with Glee. After leaving the company, he became a WARC director in November 2018. Certified public accountant.
Show more...Investment focus
- Industry: Beauty, Events, Apparel
- Stage:Seed, Angel, Pre-Seed
- Geography: Japan
Investor stats
- Total investments: 9
- Round size: Seed $453k–$7.1M; Angel $2.8M–$28M
- Lead/follow: 0% lead, 100% follow
Portfolio highlights
- Neith — Neith is a apparel manufacturer, seller and a whoelseller of water absorbing bralette, lingerie and shorts for women.
- WARC — WARC provides hands-on support for business management departments as well as mergers and acquisition advisory services.
- Vitalogue Health — Vitalogue Health is a hormone testing service intended to provide access to hormones and medical care. They allow users to self-check the physical condition for pregnancy and how hormones affect it, whether the symptoms are related to menopause, and provide personalized test results, commented on by physicians.
Ruichi Kentaro is an Angel Investor.
Show more...Investment focus
- Industry: Content, Video Games, Social Network
- Stage:Seed
- Geography: Japan
Investor stats
- Total investments: 1
- Lead/follow: 0% lead, 100% follow
Portfolio highlights
- Graffity — Graffity to provide AR experiences globally and enrich life more conveniently and invent the AR entertainment experience and provide it globally.
Access 48,091 investors
822 industries, 177 countries. Updated daily. Emails and phones included.
Browse database — It's Free!Yasuyuki Kin
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- Industry: Media and Entertainment, Recruiting, Career Planning
- Stage:Seed, Angel, Pre-Seed
- Geography: Japan
Investor stats
- Total investments: 16
- Round size: Seed $1.4M–$14M
- Lead/follow: 13% lead, 87% follow
Portfolio highlights
- Onepair — Onepair is a job consulting and recruiting company. Onepair is to co-creating careers by talking about real-world ace with active ace.
- Strainer — Strainer Co., Ltd. is an information distribution platform that conveys corporate information centered on financial data. Although there are not a few media to deliver financial information, the company's strengths are strong to be easily viewed, including financial information of overseas companies.
- LAMILA — LAMILA develops system that improves the creation of retail stores.
Otomi Tomohiro - CEO @ Tyrus
Show more...Investment focus
- Industry: Travel, Tourism, Recruiting
- Stage:Seed, Angel
- Geography: Japan
Investor stats
- Total investments: 8
- Round size: Seed $549k–$11M
- Lead/follow: 0% lead, 100% follow
Portfolio highlights
- CUICIN — Quickin is changing the travel experience with the digital transformation.
- HANOWA — Hanowa is a matching platform between freelance dental hygienists and dental clinics. It matches dental care workers who want to work in their spare time with dental clinics. It can be used for studying, side jobs, and job change activities.
- Yondemy — Yondemy is an online platform for children reading books.
Senior Executive Vice President and CTO at Sony Group Corporation and President & CEO at Sony Computer Science Laboratories, Inc.. He attended Waseda University.
Show more...Investment focus
- Industry: Health Care, Fitness, Medical
- Stage:Seed, Angel
- Geography: Japan, United States
Investor stats
- Total investments: 8
- Round size: Seed $3.3M–$43M
- Lead/follow: 0% lead, 100% follow
Portfolio highlights
- GPx — GPx is a biotech company that revolutionizes remote chronic disease management with bloodless blood tests. It is dedicated to transforming the standard of care of cardiorenal diseases and enabling patients to better understand their condition, much like the continuous glucose monitor has transformed diabetes care.The company was founded in 2020and is based in Boston, Massachusetts.
- AnotherBall — AnotherBall is a blockchain startup that combines entertainment and blockchain.
- SBX Corporation — AI R&D: Deep learning, Machine learning, Automation, Text mining. Development, customization and maintenance of software platforms for drug discovery and life science research.
Masao Ito is a Founder & CEO at User Local.
Show more...Investment focus
- Industry: Content, Social Media, Information Technology
- Stage:Seed, Series A, Angel
- Geography: Japan
Investor stats
- Total investments: 21
- Round size: Seed $661k–$17M; Series A $12M–$13M
- Lead/follow: 5% lead, 95% follow
Portfolio highlights
- Illusil — Illusil is a service that makes it easier for anyone to generate slide materials and reduces the amount of time needed to do it. Additionally, presentations can be automatically generated from text input by AI, and over 1,000 design templates can be used to build original slides.
- Alyaum — Aryaum supports "regional revitalization through NFT" by offering local governments all around the nation hometown tax and tourism NFT solutions.
- Driver Technologies — Driver Technologies is a cloud logistics platform provider. It provides a solution for driver matching and cargo vehicle demands.
Dr. Kamada earned his Ph.D. at the University of Tokyo. In 1984, he pursued his journey to establish his own business that focused on information appliances and mobile software, namely ACCESS Co., Ltd.. With great success, the company entered the Tokyo Stock Exchange Mothers Market in 2001. He left ACCESS Co., Ltd. in 2011, and founded TomyK Ltd.in 2012 where he supports startups possessing revolutionary business ideas that revitalize the Japanese economy.
Show more...Investment focus
- Industry: Fitness, Medical, Genetics
- Stage:Seed, Angel
- Geography: Japan, United States
Investor stats
- Total investments: 3
- Lead/follow: 0% lead, 100% follow
Portfolio highlights
- SmarTrial — Activaid owns and operates a social data platform for patients with inflammatory bowel disease. It allows patients to support and exchange information within the patient community with the same disease; provide information necessary for new drug development and matching to clinical trials that suits them; and improve medical treatment. YasuakiHasebe founded Activaid in 2018. It has its headquarters in Tokyo in Japan.
- Genomelink — Genomelink is a platform where people discover more with their DNA data and help businesses build, market and do research with it. The best founders in consumer genomics with real experience in the industry for many years, including M3, Inc. ($13B valued Meditech in Japan), a founding member of the Japanese version of 23andMe, and leadbioinformatician and software engineer at a joint-venture between Illumina and Sony. Raised $4M for Seed Round from Berkeley SkyDeck, SONY, and top-tier Japanese VCs. Supported by Illumina Accelerator, Carlos Bustamante Lab at Stanford University among others.
- MinD in a Device — MinD in a Device Co., Ltd. is a university-launched venture that aims to port human consciousness to devices (machines and computers) in the medium to long term based on long-term research results on consciousness. As the first step toward realization, we will evolve and deepen the "generation model" considered to be the source ofconsciousness, and promote the development of next-generation AI and social implementation.
Social Network Angel investor funding in Japan at a glance
Stats across 12 deals from 21 investors.
Access all 21 angel investors in Japan Social Network startups.
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Kensuke Furukawa was born in June 2, 1981. He graduated Waseda University majoring Political Science and Economics, and in 2000, he launched "Milkcafe", a student community, which has grown to a site with 10 million PV per month. In 2004, he became the CEO of Media Clip, which operates a rental bulletin board service "ShitarabaBBS". After that year, he had transfer "Shitaraba BBS" to Livedoor, and took charge of starting up the Consumer Generated Media sector. In 2006, he joined Recruit, and took charge of starting up a new business at Business development sector. In June of 2009, he left Recruit, and became the CEO of nanapi (formerly Rocket Start), which operates the How-to Site "nanapi".
Show more...Investment focus
Investor stats
Portfolio highlights
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iiba
— Iiba is a geospatial platform that specializes in providing location information related to child-rearing.
-
Tohakusha
— Tohakusha is a creative agency that offers design, production and sale of digital content and EC websites, and content creation services.
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Neighbor
— Neighbor is a metaverse game developer that specializes in Fortnite.
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