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©2001-2025 Atumi & Sakai
Senior Partner
Japan (2001) and New York (2006)
Daini Tokyo Bar Association
Waseda University (LL.B., 1997) The Legal Training and Research Institute of the Supreme Court of Japan New York University School of Law (LL.M. in Corporation Law, 2005)
Kirkland & Ellis LLP (Chicago)
JFBA Center for Promotion of International Legal Service (2014-) Designated by the JFBA as a support attorney under the system to introduce support attorneys for small and medium-sized enterprises doing business in overseas countries/regions (-2022) The Japan Association of International Economic Law Trustee of Japan Institute of Life Insurance (June 2015-June 2023) Member of the Individual-type Pension Policy Formulation Committee of the National Pension Fund Association Member of a Tokyo Metropolitan Government led study group on attracting foreign finance related corporations Legal adviser to the Japan Blockchain Association Member of the Registered Foreign Lawyers Disciplinary Actions Committee of the JFBA Vice-Chair of the Financial and Banking Law Conferences Subcommittee of the Banking Law Committee of the International Bar Association Member of the study group "Innovation and Laws" (February 2017-) Co-Chair of the Banking, Finance & Securities Committee, the Inter-Pacific Bar Association Japan Association of the Law of Finance Temporary Special Advisor (part-time) to the Minister’s Secretariat, Ministry of Economy, Trade and Industry (September 2018-August 2019) Supporter of "Fintech Business Camp Tokyo" and "Tech Business Camp Tokyo", Tokyo Metropolitan Government Accelerator Program Auditor of The Organization of Global Financial City Tokyo Member of the expert panel of the Tokyo Metropolitan Government's "Global Financial City: Tokyo Vision" Vice-Chair of the Banking & Finance Committee, LAWASIA
”Lawyers Guide 2024," Lexis Nexis and Business & Law LLC (January 2024) [Interview]
“Report on Research on Currency Law Systems in the US and Europe,” Ministry of Finance (2023) [Co-author]
Fintech: how is the world shaping the financial innovation industry?, Japan Chapter, International Bar Association Banking Law Committee (2023)[Co-author]
“Japan: Trends & Developments, ” Chambers Global Practice Guides - Blockchain 2022, Chambers and Partners (2022) [Co-author]
“Study Report on Overseas Stablecoin Use Cases and Analysis of Related Regulations,” Financial Services Agency (2022) [Co-author]
6000 Legal Countermeasures for Financial Institutions Vol.3: Incidental and Ancillary Services, Fintech, Kinzai Institute for Financial Affairs (2022) [Co-author]
"Stablecoins Legislation and Other Legislative Changes Affecting the Japan Fintech Industry," Chambers FinTech 2023 (January, 2023) [Co-author]
"An Introduction to FinTech Legal (Chambers PA: FinTech 2022 Overview Japan)," Chambers FinTech 2022 (January, 2022) [Co-author]
Moderator at a session entitled "Generative AI in the Financial Sector: Use Cases, Legal Issues and Regulatory Considerations", at IPBA Annual Meeting and Conference 2025 in Chicago, hosted by Inter-Pacific Bar Association (IPBA), April 25, 2025
"Doing Business in Sri Lanka:First Steps for Japanese Companies Entering Sri Lanka," hosted by Atsumi & Sakai and supported by Japan Institute for Overseas Investment (JOI), November 27, 2024
Speaker at a panel session entitled “Banking, Finance and securities -CBDC and digital assets: Digitalization is happening,” at the IPBA Annual Meeting and Conference 2024 in Tokyo, hosted by Inter-Pacific Bar Association (IPBA), April 26, 2024