We Are All Professionals

Yasuhiko Yurimoto

Founder / CEO / General Partner

Yasuhiko founded Global Brain after holding senior positions in Citibank N.A. and Fuji Bank (Mizuho Bank).
Leveraging his experience as a founder and overcoming financial crisis in 2000 and 2008, he is a mentor to many entrepreneurs.

Isao Yasuda

Fund Management Group

General Partner

Isao joined GB as an expert in IPO. At Japan Securities Dealers Association, he was responsible for listing examinations, introducing book building system and other initiatives.

Jiro Kumakura

Investment Group

General Partner

Jiro is a partner in charge of technologies. He was an early member of Digital Design, an enterprise middleware provider which made an IPO at NASDAQ Japan as its very first listing.

Keisuke Tatsuoka

Investment Group

General Partner

Keisuke built his career in consulting and new business development at Recruit and Boston Consulting Group for clients in the telecom, CPG, and financial institutions.

Kazuhiko Miyama

Investment Group

Partner

Kazuhiko is a strategist with experience in corporate planning and new business development, having lead and managed various services at Recruit and TSUTAYA Online.

Ayu Shinoyama

Corporate Management Group

Partner / Chief Financial Officer

Ayu is an expert in tax accounting. Prior to joining GB, she managed the back office for a tax accounting firm supporting client auditing,incorporating and many other functions.

Tasuke Nakagawa

Business Development Group

Partner / M&A

Tasuke brings financial expertise from his work at Ernst & Young ShinNihon LLC. Experienced in auditing, financial due diligence and IPO preparation.

Hiroshi Shimazu

Corporate Management Group

Partner / General Counsel

Hiroshi manages legal and due diligence across the GB's global operation and also helps portfolio companies with the strategic legal and IP issues. Prior to joining GB, he served as APAC Regional Counsel at a U.S. company and the head of U.S. Legal at a Japanese company.

Noriko Usui

Fund Management Group

Partner / Chief Fund Officer

Noriko is responsible for the fund management and administration. She also advises the portfolio company in HR, general affairs, and accounting matters. She has experience in managing the back office both in a public company and a venture company.

Naoki Kamimaeda

Investment Group

Partner / AI & Cyber Security Europe Office Representative

Naoki is responsible for AI, Big Data and Cloud Tech areas. Prior to joining GB, he worked for Sony as a software engineer specialised in AI and Big Data technologies. For the last 2 years in his Sony career, he worked in San Francisco as a software engineering manager of PlayStation Network.

Hirokazu Watanabe

Investment Group

Partner

Hirokazu has various experiences about venture-investment, M&A, JV and new business development. He has lead many deals in NTTDoCoMo, LINE and venture-capital for a long time.

Emi Katsumata

Corporate Management Group

Associate

Emi is responsible for GB’s reception and general administration. Prior to joining GB, Emi worked for a trading company and engaged in administrative work. She was in charge of general affairs and general reception work at a major tax accountant corporation.

Harue Hayashi

Fund Management Group

Partner in charge of Fund Management

Harue is responsible for the fund management and administration.
She also advises the portfolio company in HR, general affairs, and accounting matters.
She worked for a life assurance company and a tax accounting firm.

Hidetaka Aoki

Investment Group

Partner in charge of Space & Robotics

Hidetaka is responsible for aerospace and new technology sector. He joined GB from Dream Incubator where he was an evangelist for the aerospace business, developed strategies and consulted for the clients. Prior to DI, he developed “Kounotori”, Japan’s first automated cargo spacecraft at Mitsubishi Electric and won a number of awards.

Hisashi Suzuki

Investment Group

Singapore Office Representative

Hisashi is responsible for operations in the APAC (Southeast Asia, India, and Oceania) region. Prior to joining GB, Hisashi was responsible for producing some of Japan’s major hit contents such as Final Fantasy and EXILE. He was a founder of Square (formerly Square Enix), LDH and served as a senior executive at Rakuten.

Jooil Hong

Investment Group

Partner in charge of Korea

Hong is Venture Partner and is responsible for the investment in Korea. Prior to joining GB, Hong was a Head of Growth Strategy Part at Daum Kakao. He also served as an Entrepreneur and CSO of a Startup. He also built his career at Skylake Investment and focused IT Sector Investment.

Junji Okamoto

Investment Group

Principal

Prior to GB, Junji spent several years at an investment bank where he was involved in M&A advisory and real estate business. He's also worked for a VC and RECRUIT where he was involved in startup investment in China, US and South East Asia.

Jungyong Kim

Investment Group

Principal / Korea Office

Kim launched his own startup in Korea, and expanded its business into Japan and China last 6years. He has broad experiences of business developments globally, and speak both Korean and Japanese fluently.
He is in charge of investments in Korean startups from KDDI Open Innovation Fund.

Kaori Akiba

Corporate Management Group

Senior Associate

Kaori administers our office and supports our portfolio companies in accounting. Previously she managed promotions and events at an association which provides course and certification program.

Kazunori Yamaguchi

Investment Group

Principal

Kazunori has developed his career in Strategic Consulting industry before joining GB. At the Boston Consulting Group, he worked with various clients, such as Financial Institution, Trading Company, and Manufacturers. He has also worked in a Japanese professional baseball team as a member of Business Planning Team.

Keiji Niizu

Investment Group

Partner in charge of Enterprise Software & Services

Prior to joining GB, Keiji worked at Microsoft, Mobile Internet Capital (MIC), and JICT (government fund). At Microsoft, Keiji was an engineer for server software and cloud services. At MIC, Keiji invested in startups in Japan, US, and Israel. At JICT, Keiji co-invested with Japanese companies in oversea IT projects including M&A.

Keiko Yoshida

Fund Management Group

Senior Associate

Keiko is an accounting expert. Prior to joining GB, she worked for an accounting firm where she advised her clients on monthly financial closing and analysis. At Daiwa Securities Group, she was advising individuals and businesses on asset management.

Keita Washizu

Investment Group

Principal

Keita built his career in strategy consulting at Roland Berger and Arthur D Little, where he supported new business development, open innovation and M&A for clients mainly in manufacturing and investment firms. He started his career as an engineer at Schlumberger.

Kenta Kitsuka

Investment Group

Partner in charge of Functional Materials

Kenta built his career in Sanyo Electric, and L'Oreal as a researcher. He has a Ph.D in the material science and physical chemistry, and brings expertise in consumer products.

Kia Ishii

Business Development Group

Principal/Tech Talent

Kia is an expert in Web design/development. He is also an open source software developer authoring the web framework plugins and manages the open source community. He worked for an enterprize system integration company and a tech venture.

Koichiro Suzuki

Business Development Group

Principal/Tech Talent

Koichiro is a specialist in system software development, IT infrastructure design/management, IoT, and VR. He brings a broad range of technical skills from his work at tech venture responsible for product customer support.

Kotona Inaida

Fund Management Group

Associate

Kotona is responsible for the fund management and administration. Prior to joining GB, she worked at a public-listed company, and has experience in the accounting affairs of digital marketing and EC depertments.

Kyoko Minagawa

Business Development Group

Principal/Design Talent

Before joining GB, Kyoko worked for Livedoor and Yahoo! JAPAN as a web designer. At Yahoo! JAPAN, she was responsible for designing Yahoo! BB, Yahoo! Auction and Yahoo! Partner. She is responsible for conducting the user surveys and further analyzing the effectiveness of such studies through the information/branding designs.

KyungHun Lee

Investment Group

Principal

Prior to joining GB, Lee worked for a global startup as CSO and managed the AI robot business development. He started his career as a consultant at Nomura Research Institute and then moved to Boston Consulting Group.

Mana Takabayashi

Investment Group

Principal

Before joining GB, Mana worked for a consulting firm and Japan International Cooperation Agency (JICA). While at the consulting firm, she was in charge of BPR projects for the Japanese manufacturing industry. At JICA, she supported overseas business development for Japanese SMEs within different industries, which are developing their business in Asia, Africa, and Latin America, etc.

Masaya Kawakami

Investment Group

Principal

Prior to joining GB, Masaya worked for Rakuten and ofo. At Rakuten he held positions in UX design and product management of many services. At ofo, Masaya led business strategy and KPI visualization for APAC countries.

Mizue Kinoshita

Corporate Management Group

Associate

Prior to joining GB, Mizue worked for an advertising and publishing company as an accounting. She is responsible for improving efficiency of accounting tasks for GB’s portfolio companies and GB group.

Nagisa Shigetomi

Investment Group

Principal

Before joining GB, Nagisa worked for JR Kyushu and Eirene University. At Eirene University, she was involved with management as co-founder, placing importance on social impact. She translated the Business Model Canvas booklet into Japanese and released it as Creative Commons. She has experience in supporting to create a new business using Design Thinking.

Sachiko Sakamoto

Investment Group

Principal

Before joining GB, she built her career in marketing and business development for the telecommunication & content services at NTT DOCOMO and Rakuten, where contributing to the growth of Rakuten Mobile as Head of Service Strategy Dept.

Sayaka Yoshino

Corporate Management Group

Associate

Sayaka is responsible for GB’s general administration and accounting. Prior to joining GB, Sayaka was a receptionist at an esthetic salon.

Sho Ikeda

Investment Group

Principal

Sho built his career in corporate finance and consulting at Mizuho Bank and Deloitte Tohmatsu Consulting. He supported his client’s new business development and current operation improvement from the viewpoint of finance/strategy in Japan and South East Asia (Indonesia).

Shohei Hayashi

Investment Group

Principal

Before joining GB, Shohei worked for Japan International Cooperation Agency and Deloitte Consulting, where he gained experiences in emerging market investment and M&A consulting. He started his career as a trader at JPMorgan.

Shohei Ichimiya

Investment Group

Principal

Prior to joining GB, Shohei worked for Sony Corporation where he held positions in engineering and corporate development. As an engineer, Shohei managed production systems for the PlayStation Network. As part of the corporate development team, he executed tech related M&A and startup investments.

Shohei Takaoka

Business Development Group

Principal

Shohei was a founding member of several tech startups. He was managing BizDev, back office, and financing. At GB, Shohei is responsible for BizDev support, such as connecting startups with enterprize companies to make alliances.

Takahiro Mizuno

Corporate Management Group

Partner in charge of Legal & Compliance

Takahiro manages legal and due diligence across the GB's global operation and also helps portfolio companies with the strategic legal and IP issues. Prior to joining GB, he served as an in-house lawyer at Sumitomo Mitsui Banking Corporation and an associate at a legal office.

Takashi Kato

Investment Group

Partner in charge of Ad Technology

Takashi joined GB as an expert in B2C online sales/marketing and promotions. He built his career in Amazon, Microsoft and TripAdvisor, and currently works with portfolio companies on advertising/promotion strategies.

Takashi Sano

Investment Group

Partner in charge of Blockchain
Singapore Office

Takashi is an APAC regional manager. Prior to joining GB, Takashi spent his career in establishing joint ventures and new projects, as well as managing energy business in APAC and Middle East / Africa region at Sony Electronics Asia Pacific based in Singapore.

Tatsuya Matsumoto

Investment Group

Principal
Singapore Office

Prior to joining GB, Tatsuya worked for UBS, INCJ (Innovation Network Corporation of Japan) and NRI (Nomura Research Institute Singapore). At NRI, he provided consulting services for new business development in ASEAN. At INCJ, he focused on technology sector and was involved with investment in JOLED. At UBS, he engaged in M&A advisory and financing transactions.

Tomoaki Ishikure

Investment Group

Partner in charge of Startup Acceleration

Tomoaki built his career in new business development and corporate development including venture investment and M&A at Recruit Holdings.

Tomoko Minagawa

Investment Group

Principal

Prior to joining GB, Tomoko built her career at IBM Japan, a management consulting firm, and a Tokyo-based AI startup. Through various consulting projects, she supported enterprise companies in cross border business development, open-innovation strategy and business alliance implementation. In the AI-startup, she was responsible for AI-based business development through partnerships with leading enterprises.

Yoko Toiyama

Fund Management Group

Partner in charge of Investor Relations

Yoko is partner in charge of Investor Relations to Limited Partners. Prior to joining GB, she served as investor relations for buy-out, secondaries, venture capital fund at Ant Capital Partners. She also participated in the establishment of Sony Bank at Sony.

Yoshinari Ito

Investment Group

Partner in charge of Strategic Partnerships

Prior to joining GB, Yoshinari worked for a security finance company and a startup company.At a startup company, he was responsible for consolidated annual budget planning, equity financing, IPO preparation, IR strategy, new business development, M&A, and startup investment.

Yusuke Suzuki

Investment Group

Principal

Prior to joining GB, Yusuke worked for the Ministry of Foreign Affairs and McKinsey & Company. He started his career as a French-speaking diplomat with 4 years’ experience in France, and managed relations with Africa and South Asia. At McKinsey, he led large-scale transformation programs and strategy, sales or procurement projects, both in BtoB and BtoC.