To become a tech-company that enriches the world through lifestyle innovation.


Constantly strive to create experiences that make people move and provide easy access to information.


Constantly strive to create experiences that make people move!

Our company name "Open 8" represents our vision and commitment to always be innovative "going from zero (0) to infinity (∞) ", to embrace new challenges and to create infinite new possibilities.

There are still huge business opportunities available across the Internet, but we find a lot of the focus is within already mature sectors and business models. This is not conducive to true entrepreneurism and innovative market creation. Our video ads business for smart devices, is new and an example of market creation. It’s our ambition to be no.1 in this new business sector and of course, continuously challenge in other new possibilities.

Wherever our search for innovation takes us, our users always come first. We are constantly asking ourselves, how do our users think and feel about the services we offer.

We are committed to continuously provide easy access to information and provide users experiences that 'moves' them.


Yuko Takamatsu
President & CEO

Yuko Takamatsu

Joined Hakuhodo Inc. in 1996 and handled key campaigns for major automobile clients. Since 2005, he served as COO (Chief Operating Officer) and CMO (Chief Marketing Officer) at iStyle Inc, which operates @cosme, one of the largest cosmetic word-of-mouth media in Japan. As CEO of Cosmo.Com, Cosme Next and Istyle Global (Singapore), he oversaw cosmetics related businesses in Japan and overseas and listed on the 1st Section of the Tokyo Stock Exchange in 2012. Established OPEN8 in April 2015.

Taku Maruyama
Board of Director

Taku Maruyama

Started his career in iStyle Inc. in 2006. Since then, he was engaged in overall marketing activities including media advertising planning and sales, service development, e-commerce site construction, web marketing, and new business development.
Joined OPEN8 as a founding member in April 2015.

Hirotaka Sawada
Board of Director, CFO & Corporate Strategy Division Director

Hirotaka Sawada

Started his career in Daiwa Securities SMBC in 2008. Since then, he has been in the investment banking business such as M&A, alliances, IPO for more than 10 years at Frontier Management, Mercer Japan, and UBS Securities. Then moved to Medpeer Inc. in June 2018 and was responsible for M&A, alliances, fundraising, investor relations, human resources, and public relations as the Director of the Corporate Planning Department.
He joined OPEN8 Inc. in September 2019 being responsible for Accounting, Finance, Legal, Human Resources, and General Affairs.

Yasushi Shingai
Outside Director

Yasushi Shingai

He graduated from the Graduate School of Kyoto University in Engineering and started his career by joining former Japan Tobacco and Salt Corporation, now Japan Tobacco Inc. (“JT”) in 1980. He became President of JT America Inc. in 1990. He undertook a number of joint R&D projects with pharmaceutical and biotechnology start-ups in the US, and served as External Director of the Board at Cell Genesys, Inc., then NASDAQ-listed biotechnology company for 6years. In 2005, he got appointed as a member of JT Board of Directors and CFO . In 2006, he moves to Geneva as Executive Vice President(“EVP”) and Deputy CEO of JT International, and led the acquisition of Gallaher Group Plc. and its PMI process. He became EVP and Representative Director of JT in 2011. He currently serves as Outside Director at Asahi Group Holdings, Ltd., Mitsubishi UFJ Financial Group, Inc., Dai-ichi Life Holdings, Inc. and ExaWizards Inc. He also served as Outside Director for Recruit Holdings.

Masaaki Ito
Outside Director

Masaaki Ito

Started his career at P&G Japan in 1996. Led to turn around business of Ariel (this laundry detergent)/Joy (Dishwashing detergent) as a brand manager in japan. Worked in Cincinnati and Geneva as a marketing head of Febreze global team to lead global innovation program, whitespace expansion strategies, and led Febreze business in Western Europe region. After a Vice President of home care, oral care, and e-Business in Asia Pacific region, he left P&G to start his own consulting firm. Currently, senior Vice President of Yoshinoya, and continue to support several companies as a management advisory.

Kei Sugawara
Outside Director

Kei Sugawara

After graduating from the University of Bristol in England with a Master of Business Administration (MBA). he joined Andersen Consulting (current Accenture) in 1996 and joined Arthur D. Little (Japan) in 2000. He is one of the establishment members of iStyle Inc and in 2004 assumed the position of full-time Director. He is currently serving as Director and CFO of the Company, Director of Global Business Division, and Representative Partner, Director of ISGS Investment Works.

Atsuyuki Uota

Atsuyuki Uota

Started his career at Daiko Advertising Inc. after graduating Kyoto University's Faculty of Economics in 1995, he engaged in marketing communication strategy planning, advertising strategy planning and operation, and product brand development for client companies. He then shifted his career as a certified public accountant and joined Deloitte Touche Tohmatsu LLC. As auditing work, he was engaged in accounting audits, internal control audits, and consulting work, including support for the establishment of internal controls, the consolidated settlement of accounts, establishment of cost accounting systems, and support for the preparation of financial documents. He is now also qualified as a tax accountant and joined Open8 Inc. in 2020.

Kenji Miyako

Kenji Miyako

Graduated from the Faculty of Law at Keio Gijuku University. Representative of Altas Group (Altas Tax Accountants' Corporation, Altas Co., Ltd, Altas Partners Limited Liability Company, etc.)
After graduating from university, worked at Arthur Andersen LLP managing international tax and accounting, mergers and acquisitions (M&A) tax affairs, and financial product development (aircraft leasing), etc.
After becoming independent, established Altas Tax Accountants' Corporation, which provides advice on tax accounting matters.
Assumed the role of Managing Director when establishing Altas Co., Ltd, which mainly provides consultancy services for both public offering of stocks preparation and business restructuring matters.
Presently working as an external director/company auditor for OPEN8, Inc. and many other public-listed and unlisted companies.

Masayasu Morita

Masayasu Morita

He holds a master's degree in Education at Harvard University and in Philosophy at Cambridge University. He became the Director of Alc Co., Ltd. in 2003 and was listed on JASDAQ in 2006. After that, he founded Human Media Co., Ltd. to this day. In addition, he participate in multiple organizations such as Director of companies in Japan and overseas, Directors of NPOs, and as a university professor. Currently, he is also engaged in the investment and development of venture businesses in education and other cultural fields. In the media, he is active in various fields such as author, anchor, critic and commentator.

Hisatake Ishibashi
Executive Officer &CTO

Hisatake Ishibashi

During his graduate school at the University of Tokyo, he worked as a freelance engineer and founded THE CLIP, a design production company in 2013. In 2016, he sold THE CLIP to OPEN8 and became the CTO since then.
As the Head of Technology, he is responsible for the development of ""OPEN8 CORE TECHNOLOGY"" and uniting both teams based in Tokyo and Singapore.

Yuichi Kashima
Executive Officer&CPO

Yuichi Kashima

After graduating from Yokohama National University in 2008, he started his career in advertising agency and media business. In 2013 he was responsible for promoting GREE PF third-party products at GREE. In 2014, he was the Head of Marketing for the LINE GAME business, contributing to business expansion and user growth.
Joined OPEN8 in February 2018.

Yoriko Suzuki
Executive Officer & President's Office Director

Yoriko Suzuki

Joined Hakuhodo Inc. in 2000. After working as a media planner, she worked on campaigns for major domestic airlines. In 2011, joined iStyle Inc. and was engaged in the planning of marketing strategies, and the development of marketing schemes as the Head of Sales and Marketing. Also, promoted corporate branding as the Head of the PR office.
Joined OPEN8 in February 2018.

Yu Harasawa
Executive Officer

Yu Harasawa

In 2014, he started his career at CyberAgent Inc. as a Search Engine Marketing Specialist. He soon earned the “Best Rookie of the Year” business award. Later, became the youngest director upon being promoted to that position.
Joined OPEN8 in October 2018.


Company Name
Open8 Inc.
Founding Date
10th April, 2015
President & CEO
Yuko Takamatsu
Business Description
SaaS, API, MLaaS
Number of Employees
103 (as of November 2021)



Raises 3 Billion Yen in funding, to a cumulative total of nearly 7 Billion Yen
OPEN8 wins “Ruby biz Grand Prix 2020” Special Award
Business alliance withToppan Printing for the development of a new video creation service
Release of a new commercial ad nationwide
Release of "VIDEO BRAIN Analytics" a SNS analysis and post management service
Appointment of full-time Corporate Auditor - Mr. Atsuyuki Uota
Release of OPEN8 API Platform
Appointment of Vice President of Engineering - Mr.Tadashi Furukaya
Office relocated to Shibuya Infos Tower
Business alliance with Hakuhodo DY Media Partners to provide video solutions for newspaper companies
Appointment of Corporate Auditor - Mr. Kenji Miyako, President of Altus Group
Appointment of Outside Director - Mr. Masaaki Ito, former Vice President of P&G
Appointment of Open8’s SaaS Business Strategy Advisor - Mr. Yo Sasaki, former CEO of Oneteam
AI Video Editing Cloud "VIDEO BRAIN" Taxi Ads to Run Nationwide
Selected as a 2019 Red Herring Top 100 Asia Winner
AI Video Editing Cloud "VIDEO BRAIN" receives 2019 Good Design Award
Appointment of CFO - Mr.Hirotaka Sawada
Appointment of Outside Director - Mr. Koji Shingai, former JT Vice President
OPEN8 AD Platform starts RTB with Google's Display & Video360
Opened office at Fukuoka
Odekake video magazine "LeTRONC" starts recruiting official "LeTRONC Creators"
Launch of "VIDEO BRAIN" an AI video editing cloud service
Issued 1.5 billion yen in new shares through third-party allotment, bringing the total amount raised to 4 billion yen
Appointment of Strategic Advisor - Mr. Masaaki Ito, former Vice President of P&G
Announcment of an automatic video generation function using AI
Release of odekake video magazine "LeTRONC" Smartphone App
Issued a total of 1.5 billion yen in new shares through third-party allotment
Odekake video magazine "LeTRONC" appointed as official media of Shibuya City Tourism Association
Obtained patent for smartphone video ad space
Release of odekake video magazine "LeTRONC"
Office relocated to Jingumae, Shibuya
Release of "NATIVE TAP" Video Article Advertising service
Capital and business alliance with TBS Group, iStyle and Excite
Issued new shares through third-party allotment totaling 800 million yen
Appointment of Outside Director - Mr. Masayasu Morita of HITOMEDIA
Established OPEN8 Singapore Pte. Ltd. as a base for technology development
Launch of "VIDEO TAP", a premium female-oriented ad network specializing in smartphones
Established Open8 Inc.