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Top 25 Medical Angel Investors in Japan in May 2025

Last updated: May 2025 A list of 25 angel investors that invest in Medical startups based in Japan. We rank investors based on the number of investments they made in Medical companies from Japan. We update this investor list every month.

Top 25 Medical Angel Investors in Japan in May 2025

Investor	Medical Japan investments
Hirofumi Miki	2
Hiromasa Umeda	1
Takeuchi Makoto	1
Kenshin Fujiwara	1
Tatsuya Ota	1
Kaya Takafumi	1
Yoshimori Ito	1
Yu Akasaka	1
Minoru Moriya	1
Tadashi Masuoka	1
Hayama Takashi	1
Kamata Tomihisa	1
Suzuki Tatsuya	1
Toshiro Wakimaru	1
Kazuhiro Ishikura	1
Hiroaki Kitano	1
Sakano Atsushi	1
Taro Fukuyama	1
Koichiro Yoshida	1
Junji Oshita	1
Tatsuya Shiga	1
Chikako Morimoto	1
Otomi Tomohiro	1
Fujimoto Shuuhei	1
Yamashita Tetsuya	1

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Investor list

After JTB Co., Ltd. and CYBIRD Co., Ltd. as an initial member of Glee Co., Ltd. is responsible for business development. Currently, he is mainly engaged in venture support in the Internet area, investing in venture and venture capital, and served as management advisor for dozens of companies. Hands-on business development, growth strategydevelopment, financing advice, HR organization design support, partner referral and Recruit Support. He is also engaged in business support for ventures in the healthcare and university venture fields. He served as Digital Health Meetup Advisor, NEDOTCP Mentor and Future 2016 Mentor.

Investment focus

Content, Marketing, Internet
Seed, Angel, Pre-Seed
Japan

Portfolio highlights

Epicbase — Epicbase is an AI-based automatic voice transcription service based on voice recognition technology.
Go Visions — Go Visions engages in the edutainment tech for children and human resources services.
Ai-Dounyu.com — Ai-Dounyu.com is a platform that helps organizations looking to integrate AI choose their ideal AI implementation partner for free.

Hiromasa Umeda - Representative Director and CEO @ Medical note

Investment focus

Information Technology, Media and Entertainment
Seed
Japan

Portfolio highlights

Pleap — Pleap is a medical engineering company specializing in the development of AI and IoT-based technology solutions tailored for medical institutions. The company's product offerings include "medimo" which is an AI tool that automatically creates medical record manuscripts from medical audio.
Ostance — Ostance is a group that moves the world in all kinds of entertainment.
Conoris Technologies — Conoris Technologies is a staffing agency that offers security check support services for companies.

At Yamanouchi and Astellas, engaged in drug discovery research in the areas of inflammation and bone metabolism, and created osteoporosis treatment minodronate and overactive bladder treatment solifenacin. After serving as Director of the Chemical Research Laboratory, Astellas Pharma Research Division, Executive Officer, Research PromotionDivision, and General Manager of the Research Management Division, he became Senior Executive Officer, External Relations Director. In addition, he has been involved in a wide range of industry activities, serving as the Research and Development Committee of the Japan Pharmaceutical Manufacturers Association, the chairman of the Industrial Policy Committee, and the Vice Chairman of the Regenerative Medicine Innovation Forum. He also studied at the University of Pennsylvania (Professor Amos B Smith III) for one year from 2001. Graduated from Toyama Medical and Pharmaceutical University Graduate School of Pharmacy. Lecturer at Seminar on Advanced Drug Discovery Science sponsored by the Pharmaceuticals Promotion Association

Investment focus

Information Technology, Mobile, Medical
Seed, Series A, Funding Round
Japan

Portfolio highlights

Flyle — Flyle provides a cloud based platform for product management helping customers to improve productivity & creativity in product development.
Reiwa Travel — Reiwa Trave is a digital travel agency intended that optimizes overseas travel. The company's platform uses online travel booking tools that provide digitalized contracts along with trip management, thereby enabling its customers' vacation and leisure experiences.
Linkage — Linkage is a Online health support business and Online specific health guidance.

Kenshin is a CEO at Hacarus Inc., a healthcare technology startup based in Kyoto, Japan.He co-founded several tech startups with 2 exits in the past 15 years. His first career started as an engineer at Sony Computer Entertainment and worked on PlayStation development projects. HIs fist startup was acquired by Japanese public company, and thesecond startup was sold to the US company.Born in 1976. He holds a Computer Science degree from California State University. He loves mountain hiking and currently living in Kyoto Japan with his wife and family.

Investment focus

Mobile, Medical, Software
Seed, Series A
Japan

Portfolio highlights

Helpfeel — Our vision is to make saving, sharing, and exploring ideas as natural as breathing. On this journey we're humbled to be helping millions around the world from solo makers to university research labs, from gamers to pro designers, and large to small teams like ours.
HACARUS — We make AI work, where common Big Data aproaches fail. Get explainable results, even from small data amounts. Available on the cloud or as embedded devices.

Mr. Ota is an International Fencing Federation Director

Investment focus

Medical, Taxi Service, Public Safety
Seed
Japan

Portfolio highlights

Mairu Tech — Mairu tech that enables traveling by private ambulance and welfare taxi more convenient.

Kaya Takafumi - President / Founder @ SignalTalk

Investment focus

Medical, Health Care, Information Technology
Series A
Japan

Portfolio highlights

Aiwell — Aiwell is a medical and health company that provides health information and the provision of health promotion and prevention services.

Yoshimori Ito is the Director at Toggle Holdings..

Investment focus

Medical, Wellness, Health Care
Series A
Japan

Portfolio highlights

SARAH — SARAH has been working on the planning and operation of the gourmet community app "SARAH", which operates a menu gourmet site "SARAH" that allows you to search for items you want to eat from menu-based posts.
MTU — MTU offers medical security cloud services to medical organizations and delivers IT support, including the recent cyber harm to medical institutions, both online and offline.

During Hosei University student, and intern at Hakuhodo C & D. After joining the Image-net, I do media monetization of EC site as a media planner. Then, new business, engaged in Alliance. Launched a crowdsourcing site "MILLION DESIGNS" of design in the individual, sold to Ransazu Corporation. Established the Eureka Co., Ltd., wasappointed Representative Director CEO.

Investment focus

Food and Beverage, Content, Internet
Seed, Angel, Funding Round
Japan, Australia, Hong Kong

Portfolio highlights

Now Do — Now Do provides online growth revolution platform.
RE — RE specializes in smartphone application design and development.
Vitalogue Health — Vitalogue Health offers Canvas, a home-based hormone testing service for women.

Minoru Moriya is a director at AuB.

Investment focus

Health Care, Nursing and Residential Care, Internet
Seed, Series A, Funding Round
Japan

Portfolio highlights

M-Box — M-Box provides IT solutions to the pharmaceutical and healthcare industries and operates web services.
HANOWA — HANAWA is a matching platform between freelance dental hygienists and dental clinics.
Willbox — Willbox is an international logistics company providing an international logistics digital platform for shippers and logistics companies. The company's platform "Giho" connects shippers and logistics companies (transportation, packaging, warehousing, customs clearance, etc.) with a direct contract. It visualizes the three elements of[lead time, money, and safety], which have been regarded as a black box, and supports comparative examination and decision making. Willbox digitizes the packing technique of wooden boxes and steel, mandatory for international logistics, and incorporated them into their system. Their mission is to solve the logistics issues focusing on the large cargo of industrial products.The company was founded in 2019 and is based in Yokohama-shi, Kanagawa.

Tadashi Masuoka - President and Founder @ nippontect systems

Investment focus

Medical, Health Care, Home Health Care
Seed
Japan

Portfolio highlights

Plus-medi — Plus Medi is the developer of MyHospital, a medical care and management app offering personal health record (PHR) solutions.The app aims to help users by reducing the time they spend at the hospital or doctor's office. MyHospital also includes features like bills payment, medication management, and online paperwork.

Hayama Takashi - Outside Director @ Eco Style

Investment focus

SNS, Beauty, Medical
Seed
Japan

Portfolio highlights

MedPeer — MedPeer operates as a community site for doctors. MedPeer is a recruitment agency collective registration service.MedPeer operation of "MedPeer," a collective intelligence service/ community website for physicians.

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.

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.

1985. Graduated from the Faculty of Economics, Hitotsubashi University. In 2008, he engaged in new business support and venture support for large companies at Inspire Co., Ltd. In 2011, he was appointed director of UXConsulting company wacul. In 2012, he was appointed director of giftee.

Investment focus

Internet, Agriculture, Information Technology
Seed, Funding Round, Angel
Japan

Portfolio highlights

Pleap — Pleap is a medical engineering company specializing in the development of AI and IoT-based technology solutions tailored for medical institutions. The company's product offerings include "medimo" which is an AI tool that automatically creates medical record manuscripts from medical audio.
AGRI SMILE — AGRI SMILE is a platform that focuses on sharing agricultural technology.
Conoris Technologies — Conoris Technologies is a staffing agency that offers security check support services for companies.

Toshiro “Tosh” Wakimaru is the Chief Operating Officer of MedPeer, Inc. , Tokyo, Japan since May 2010. Medpeer is the “Medical Doctor Exclusive” SNS in Japan that has just successfully gone to the market in 2014.Prior to the current job, Tosh had been actively working for Price Waterhouse Consulting, Japan LLP (now IBM Japan, Ltd.) aftergraduating from the Boston University School of Management in 1996. While there he completed numerous projects in corporate strategy, operation improvement, and new business development focusing on the retail, service, and healthcare industries with a secondment to the Ministry of Economy, Trade and Industry.

Investment focus

Task Management, Food and Beverage, SNS
Seed, Funding Round
Japan, India

Portfolio highlights

Clear — Clear, Inc. operates sake subscription service “SAKELIFE".
Cub McPaws — Buy comfortably fashionable kids clothes (4 - 12 years) online in India from Cub Mcpaws at best prices. Gorgeous dresses, jumpsuits, t-shirts, shirts & bottom wear for boys and girls | Free Shipping | COD
Smartround — Smartround is a specialized finance management platform for startups and their investors. For start-ups, for entrepreneurs who are not familiar with finance, simply enter the necessary information according to the guide, prepare appropriate financing round, and prepare a function that can simulate and execute a capital increase. Support informationsharing and communication with shareholders even after the capital increase.

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.

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.

Hiroaki Kitano is the SVP at Softbank Mobile. He attended Waseda University.

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.

Sakano Atsushi

Investment focus

Medical, Nursing and Residential Care, SaaS
Seed, Series B
Japan

Portfolio highlights

Heartseed — Heartseed has set a mission to “open the door to heart disease treatment with regenerative medicine” and is working toward the day-to-day clinical application of myocardial regenerative medicine.
Matsuri Technologies — matsuri technologies is a real estate tech company that provides solutions to support private property rentals. The company's products include m2m Systems, an Airbnb management platform that helps business operators to manage their accounts, communicate with guests, automate check-ins, offer customer service, and more.

Taro Fukuyama is Co-Founder and CEO of Fond.

Investment focus

Software, Medical, Logistics
Seed, Pre-Seed, Series A
Japan, United States

Portfolio highlights

Open — Open is an AI-powered customer support platform that can handle your company's support inflow via phone, web, WhatsApp, Slack, email, SMS and more
Move AI — MoveAI is the end-to-end platform for relocation. Research, book, coordinate, and pay vendors all from one place. The Move AI platform streamlines relocation workflows, enabling data-driven decision making and real-time vendor communication. Plus, Move AI's in-house relocation experts deliver an all
Assembly HOA — Modernizing HOA management through advanced automation and transparency for streamlined community governance.

Founder and CEO at CrowdWorks.

Investment focus

Internet, Software, Human Resources
Seed, Funding Round, Pre-Seed
Japan, Hong Kong, United States

Portfolio highlights

Kaimak — Kaymak is a recruitment platform that focuses on creating a recruitment website, planning a recruitment strategy, and managing candidates.
Recipio — Recipio is an receipt management platform specialized in providing digital receipt solution. Their innovative digital receipt solution and breakthrough receipt-scanning technology.
Mairu Tech — Mairu tech that enables traveling by private ambulance and welfare taxi more convenient.

Junji Oshita - Chief Executive Officer & President @ Axel Mark

Investment focus

Medical, Marketing, Health Care
Seed, Funding Round
Japan

Portfolio highlights

Quatre — Quatre is a planning, operation and sales of all real promotion platform air catalog.
KURASERU — KURASERU is a Japanese startup company that provides facility matching service for medical social workers and care managers.

Mr. Shiga is a Part-time lecturer at the University of Tokyo

Investment focus

Medical, Taxi Service, Public Safety
Seed
Japan

Portfolio highlights

Mairu Tech — Mairu tech that enables traveling by private ambulance and welfare taxi more convenient.

Chikako Morimoto - External Counsel @ Traimmu

Investment focus

Human Resources, Employment, Information Technology
Seed, Funding Round
Japan

Portfolio highlights

Dofa — Dofa aims to develop services that enrich the way of life and work of human resources that are active mainly in sales.
Best Beer Japan — Best Beer Japan provides a barrel tracking software for craft beer and barrel sharing. The company was founded in 2018.
Vitalogue Health — Vitalogue Health offers Canvas, a home-based hormone testing service for women.

Otomi Tomohiro - CEO @ Tyrus

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.

Fujimoto Shuuhei

Investment focus

Medical, Health Care, Marketing
Seed, Funding Round
Japan

Portfolio highlights

3Sunny — 3Sunny is a company which helps in solve medical care issues so that everyone can feel at ease. The company solves the problems of people in the field while utilizing technology, and create a reliable society that will eventually reach the desired end. 3Sunny was founded in July 2016 and is headquartered in Tokyo, Japan.
Contrea — Contrea develops and operates a tool that helps doctors explain the patient to be convinced and treated.

Yamashita Tetsuya

Investment focus