Innovation Agency OPT

Seiya Kurimoto

President & CEO, OPT Inc.

Mr. Kurimoto joined OPT Inc. (now renamed DIGITAL HOLDINGS, INC.) in 2010. After working as a programmatic advertising consultant focusing on the human resources industry, he served as General Manager of the Sales Division and General Manager of the Programmatic Advertising Consulting Division, before being appointed an Executive Officer of OPT Inc. in April 2019, responsible for the account domain.

Jun Ishiwata

Director, OPT Inc.

Mr. Ishiwata joined Recruit Co., Ltd. (now renamed Recruit Holdings Co., Ltd.) in 1992. He transfered from a sales division responsible for personnel media to the Human Resources Department in 2003. He was appointed General Manager of the Group Human Resources Department in 2007, General Manager of the Business Development Department of STAFF SERVICE HOLDINGS CO., LTD. in 2013, and Corporate Officer responsible for HIKARI TSUSHIN, INC. in 2015. He joined OPT Holding Inc. in 2018, managing the Human Resources Division as Group CHRO. He concurrently serves as Director & CHRO of OPT Inc. since April 2019.

Tadashi Miyajima

Director, OPT Inc.

Mr. Miyajima joined Osaka Gas Co., Ltd. in 2006. After passing the CPA exam in 2008, he joined KPMG AZSA LLC, working mainly on legal audits of listed companies. He subsequently worked in the strategy group at Accenture Japan Ltd., responsible for areas including medium-term management plan formulation support and BPR, mainly for financial institutions, in the advisory business department of Deloitte Touche Tohmatsu Limited, responsible for areas including M&A due diligence, and in Tri-Stage Inc., where he supervised overall management, primarily corporate divisions, as Director and CFO of a group subsidiary. He was appointed an Executive Officer of OPT Inc. in December 2019, responsible for the business planning domain.

Yosuke Tsutsumi

Executive Officer, OPT Inc.

Mr. Nakano joined OPT Inc. (now renamed DIGITAL HOLDINGS, INC.) in 2006. He served as General Manager of the Sales Department, General Manager of the Business Department, and General Manager of the Business Development Headquarters before assuming the position of Executive Officer at OPT Inc. in 2015, responsible for the digital-origin branding domain and O2O domain. He has been responsible for the account domain since 2019.

Yutaka Kurose

Executive Officer, OPT Inc.
Director, GENERATE INC.

Mr. Kurose joined OPT Inc. (now renamed DIGITAL HOLDINGS, INC.) in 2007. He was engaged in sales, primarily to the entertainment industry. He participated in the establishment of the Mobile Sales Division. Subsequently, he served in the research solutions business section and the sales section specializing in apps, before assuming the position of Executive Officer of OPT Inc. in 2017. He is responsible for the account domain.

Dai Takeuchi

Executive Officer, OPT Inc.

Mr. Takeuchi joined OPT Inc. (now renamed DIGITAL HOLDINGS, INC.) in 2007. After working as a programmatic advertising consultant and salesperson focusing on the human resources industry, he became General Manager of the Sales Department in 2011. He subsequently served as General Manager of the Consulting Department for new business development, media integration and social advertising, and was appointed an Executive Officer of OPT Inc. in April 2019. He is responsible for the media solutions domain.

Kouta Chishima

Executive Officer, OPT Inc.

Ms. Enomoto joined OPT Inc. (now renamed DIGITAL HOLDINGS, INC.) in 2007. She served in sales, primarily to the real estate industry. After serving as General Manager of the Business Department, in 2015 she established a sales department in the digital-origin branding domain and a department specializing in communication design and creative content. She assumed the position of Executive Officer at OPT Inc. in April 2019, responsible for the account domain.

Miki Iidaka

Executive Officer, OPT Inc.

Ms. Iidaka joined OPT Inc. (now renamed DIGITAL HOLDINGS, INC.) in 2007. After working in media planning and development and as product manager, she served as General Manager of the Operation Technology Promotion Department from 2016. She concurrently served as supervisor of project management in company-wide BPR promotion and operation base strategy. She promoted the construction of highly productive operating structures and the improvement of internal company systems. She was appointed an Executive Officer of OPT Inc. in April 2019, responsible for the media solutions domain.

Shinpei Kurosawa

Executive Officer, OPT Inc.

In 2012, Mr. Hiraiwa established Demand Side Science, the OPT Group’s ad tech development company, and was appointed Representative Director. He entered OPT Inc. in 2016. Established the engineering group “Opt Technologies,” and promoted initiatives including the development of proprietary tools and the AI transformation of the advertising agency business. In 2017, he assumed the position of CTO of OPT Inc. He was appointed an Executive Officer of OPT Inc. in April 2019, responsible for Opt Technologies as CTO.

Mizuki Ito

Executive Officer, OPT Inc.

2011年オプト（現デジタルホールディングス）入社。運用型広告コンサルタント、プロダクトマネージャーに従事し、2016年にクリエイティブ部門の部長を務める。その後、ソリューション開発部部長、メディア仕入れ部門部長を経て、2021年4月より当社執行役員就任。ソリューション（ソリューション開発・メディア仕入れ）領域管掌。

Hayato Kubo

Senior Specialist

Mr. Kubo joined OPT Inc. (now renamed DIGITAL HOLDINGS, INC.) in 2008. He worked in the programmatic advertising consultancy business, primarily targeting the real estate, travel and e-commerce industries. He subsequently served as General Manager of the Overseas Promotions Department and General Manager of the Programmatic Advertising Consulting Department, and since 2017 he has taken a leadership role in improving quality control and operational efficiency across all programmatic consulting divisions. He was appointed a Senior Specialist of OPT Inc. in April 2019.