Top 15 Social Network Angel Investors in Japan in September 2025
A list of 15 angel investors that invest in Social network startups based in Japan. We rank investors based on the number of investments they made in Social network companies from Japan. We update this investor list every month.Top 15 Social Network Angel Investors in Japan in September 2025
| Investor | Social Network Japan investments |
|---|---|
| Kensuke Furukawa | 3 |
| Hironao Kunimitsu | 2 |
| Kamata Tomihisa | 1 |
| Otomi Tomohiro | 1 |
| Takeshi Aoki Yamato | 1 |
| Yusuke Sato | 1 |
| Ryo Ishizuka | 1 |
| Seiichiro Wada | 1 |
| Hiroaki Kitano | 1 |
| Yuma Umeda | 1 |
| Masao Ito | 1 |
| Kazuma Ieiri | 1 |
| Kazuhiro Ishikura | 1 |
| Ayataro Nakagawa | 1 |
| Kentaro Ruichi | 1 |
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
- Content, Social Media, Media and Entertainment
- Seed, Funding Round, Angel
- Japan
Portfolio highlights
- 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.
- Neighbor — Neighbor is a metaverse game developer that specializes in Fortnite.
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
- Virtual Reality, Content, Media and Entertainment
- Funding Round, Seed, Angel
- Japan, United States
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 is developing an AR audio platform, including the AR camera app Vismuth, which can call avatars in reality.
- Thirdverse — Thirdverse (formerly known as Yomuneco Inc) is engaged in Virtual Reality content and services planning, development, sales and management.
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
- Fitness, Medical, Genetics
- Seed, Angel
- Japan, United States
Portfolio highlights
- Activaid — 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.
Otomi Tomohiro - CEO @ Tyrus
Show more
Investment focus
- Health Care, Travel, Content
- Seed, Angel, Funding Round
- Japan
Portfolio highlights
- CUICIN — Quickin is changing the travel experience with the digital transformation.
- HANOWA — HANAWA is a matching platform between freelance dental hygienists and dental clinics.
- Magic Shields — Magic Shields is a manufacturer and seller of floors, nursing care, and welfare products.
Takeshi Aoki Yamato is the Representative Director of Capital Medica Ventures.
Show more
Investment focus
- Social Media, Digital Media, Social Network
- Seed
- Japan
Portfolio highlights
- Chipee — Chipee is a social networking platform that enables its users to send digital gratitude in the form of chips.
Yusuke Sato is the Co-Representative and Co-Founder of Pulit.
Show more
Investment focus
- Internet, Content, Food and Beverage
- Seed, Funding Round, Angel
- Japan, Indonesia, United States
Portfolio highlights
- Kaimak — Kaymak is a recruitment platform that focuses on creating a recruitment website, planning a recruitment strategy, and managing candidates.
- Paytner — yup is providing services to support freelance people's funding.The freelance population in Japan has been shown to continue to increase in many Chosa. While working styles are diversified, they are not able to respond to the development of the working environment, and they will develop their business to change the situation where problemssuch as funding, credit, sexual harassment, and power harassment are accumulated.
- 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.
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
- SNS, Architecture, Internet of Things
- Seed, Series A
- Japan, United States
Seiichiro Wada started his career as employee No.5 at a technology startup. He then joined Dwango, the fast-growing startup that operates Japanese Youtube "Niko Niko Douga", incubating new businesses for the company and then helped the company go public. After that, he joined Monex Group, the leading online brokerage group in Japan, andled new businesses there as well. He also helped establish Monex Ventures as the CVC of Monex Group first and then raised funds from external LPs for an independent early-stage venture capital. He has invested in more than 100 early stage startups, including Money Forward (IPO), Uzabase (IPO), Mentalhealth Technologies (IPO), MFS (IPO), Folio, Emerada, Gracia, and orb.
Show more
Investment focus
- Legal, Content, Information Technology
- Seed, Series A, Series B
- Japan
Portfolio highlights
- Chipee — Chipee is a social networking platform that enables its users to send digital gratitude in the form of chips.
- AGRI SMILE — AGRI SMILE is a platform that focuses on sharing agricultural technology.
- CharacterBank — CharacterBank offers game development and production services using VR technology.
Hiroaki Kitano is the SVP at Softbank Mobile. He attended Waseda University.
Show more
Investment focus
- Health Care, Information Technology, Fitness
- Seed, Angel, Debt Financing
- Japan, United States
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.
- Epistra — Epistra accelerates research and development in life sciences.
- Activaid — 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.
Yuma Umeda
Show more
Investment focus
- Gift, Internet, Software
- Seed, Angel, Series A
- Japan
Portfolio highlights
- Xmart — Xmart is a Costs can be reduced by simply sending invoices for one month.
- AGRI SMILE — AGRI SMILE is a platform that focuses on sharing agricultural technology.
- 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.
Masao Ito is a Founder & CEO at User Local.
Show more
Investment focus
- Content, Social Media, Information Technology
- Seed, Series A, Angel
- Japan
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.
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
- Content, Fashion, Logistics
- Seed, Angel, Funding Round
- Japan
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.
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
- Beauty, Content, Fashion
- Seed, Angel, Funding Round
- Japan
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 offers Canvas, a home-based hormone testing service for women.
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
- Internet, Software, Content
- Seed, Angel, Funding Round
- Japan, Hong Kong, United States
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.
Ruichi Kentaro is an Angel Investor.
Show more
Investment focus
- Content, Video Games, Social Network
- Seed
- Japan
Portfolio highlights
- Graffity — Graffity to provide AR experiences globally and enrich life more conveniently and invent the AR entertainment experience and provide it globally.
Investors by industry
Google
Marketplace
Hardware
Energy
Proptech
Health Care
Biotech
Artificial intelligence
Climate
Consumer
Community
Impact
Gaming
FinTech
EdTech
Sustainability
Venture Capital
Big Data
Web3
B2B
Financial Services
Finance
Infrastructure
Education
Photography
Payments
Food and Beverage
Video Games
Organic Food
Retail
Beauty
Publishing
Clean Energy
Real Estate
Manufacturing
Art
Music
Android
Internet
Enterprise Software
eSports
Franchise
Sports
Construction
Digital Media
Email
Medical
Social Network
Wellness
Social Media
Mobile
Legal
Local
Recruiting
Cannabis
Platforms
Fitness
Travel
Mobile Advertising
Biotechnology
Hospitality
Social
Automotive
Crowdfunding
Wine And Spirits
Medical Device
CleanTech
Transportation
Mobile Apps
InsurTech
Enterprise
LGBT
Fashion
Oil and Gas
Life Science
Theatre
Film
Non Profit
Renewable Energy
SaaS
Sporting Goods
Restaurants
Social Impact
Software
Celebrity
Cryptocurrency
Machine Learning
Agriculture (agtech)
Media (entertainment)
Facebook
Blockchain
Investors by country
United Kingdom
Canada
South Korea
Ireland
United States
New Zealand
India
Germany
Australia
Armenia
South Africa
Spain
Japan
Africa
China
Sri Lanka
Singapore
Qatar
Asia
Indonesia
Vietnam
Oceania
LATAM
Middle East
Europe
Bulgaria
Belize
Bahrain
Saudi Arabia
Croatia
Georgia
Belarus
Hungary
France
Ghana
Ethiopia
Gibraltar
Brazil
Chile
Egypt
Finland
Costa Rica
Greece
Liechtenstein
Barbados
Belgium
Estonia
Bermuda
Czech Republic
Denmark
Liberia
Algeria
Hong Kong
Ecuador
Faroe Islands
Sierra Leone
El Salvador
Uganda
Venezuela
Sweden
Slovenia
Poland
Lebanon
Uruguay
Ukraine
Tajikistan
Puerto Rico
Mauritius
Portugal
Tunisia
Taiwan
Tanzania
Peru
Turkey
San Marino
Senegal
Togo
Uzbekistan
Serbia
Russian Federation
Zambia
Rwanda
Zimbabwe
Thailand
Norway
Dominican Republic
Azerbaijan
Iceland
Israel
Nigeria
Bahamas
Namibia
Iraq
United Arab Emirates
Jamaica
Malaysia
Honduras
Isle of Man
Bolivia
Mexico
Luxembourg
Nicaragua
Pakistan
Albania
Jersey
Panama
Grenada
Jordan
Romania
Bangladesh
Argentina
Morocco
Mali
Lithuania
Italy
Philippines
Kuwait
Malta
Myanmar
Kenya
Kazakhstan
Cayman Islands
Cambodia
Oman
Latvia
Cyprus
Austria
Switzerland
Cameroon
Guatemala
Colombia
Seychelles
Marshall Islands
Angel Investors in Japan by industry
Restaurants
Real Estate
Financial Services
Music
Transportation
Big Data
Cryptocurrency
Finance
Food and Beverage
Video Games
Medical
Wellness
Internet
Digital Media
Art
Biotechnology
Blockchain
Social Media
Software
Construction
Enterprise Software
Sports
Fitness
Hospitality
Automotive
Travel
FinTech
Consumer
Health Care
Biotech
Energy
EdTech
Climate
Proptech
Marketplace
Hardware
Artificial intelligence
Retail
Legal
Fashion
Beauty
Web3
Social
Education
Manufacturing
Community
Mobile Apps
Payments
Life Science
Social Network
Photography
Recruiting
SaaS
Gaming
Sustainability
Agriculture (agtech)
Social Impact
Media (entertainment)
Machine Learning
Enterprise
Wine And Spirits
Mobile
Impact