Admitted
Lawyer admitted in Japan (Bengoshi) (2012)
Solicitor admitted in England & Wales (2023)
*Atsumi & Sakai is not regulated by the Solicitors Regulation Authority for England and Wales.
Bar Association
Tokyo Bar Association
Education
The University of Tokyo (LL.B., 2007)
The University of Tokyo, School of Law (J.D., 2010)
The Legal Training and Research Institute of the Supreme Court of Japan
London School of Economics and Political Science (LL.M., 2018)
Background
Japan Legal Support Center, Kanoya Local Law Office (Kagoshima, 2012-2016)
Ministry of Foreign Affairs of Japan, Economic Affairs Bureau, Economic Partnership Division (Tokyo, 2016-2017)
Volterra Fietta, Public International Law Firm (London, 2018)
International Chamber of Commerce, Asia Office, Secretariat of International Court of Arbitration (Hong Kong, 2018)
Link Legal (New Delhi, 2019)
Member
Japan Association of Arbitrators (JAA)
The European Union Studies Association- Japan
The European Union Studies Association- Japan
Member, Chartered Institute of Arbitrators
Member of the "Conference for Promoting Translation of Japanese Laws and Regulations into Foreign Languages" of the Ministry of Justice (April 2024-)
Representative in Japan, North Asia of International Chamber of Commerce, Young Arbitration & ADR Forum (ICC YAAF) (2024-)
Publications
- Tax and Legal Counseling for Business Owners and High Net Worth Individuals: Business Succession, M&A, Litigation Prevention and International Inheritance, Kinzai Institute for Financial Affairs,Inc. (2025) [Co-author]
- Legal Practice of Overseas Expansion and Cross-Border Alliances in the Content Industry (Japan Edition), Law Press China (2025) [Co-author]
- First Steps in Doing Business in India, Kinzai Institute for Financial Affairs (2024) [Co-author]
- “Energy Charter Treaty and Intra-EU Investment Arbitration – Influence of Komstroy Judgement,” Tokyo Review of International Law No.14 (2024)
- “Survey Report on Foreign Systems that May Affect the Proper Handling of Specified User Information,” Ministry of Internal Affairs and Communications (2024) [Co-author]
- “Survey Report of Legal Systems in Major European Nations regarding the Use of Privacy Enhancing Technologies (PETs),” Personal Information Protection Commission(2023) [Co-author]
- “Survey of Legal Systems in Major European Nations regarding the Use of Cameras with Face Recognition Functionality,” Personal Information Protection Commission (2022) [Co-author]
- “Survey on Data Collaboration and Utilization of AI, etc. in the Healthcare Sector,” the Cabinet Secretariat's National Strategy Office of Information and Communication Technology (Commissioned by Seed Planning, Inc., recommissioned to NTT Data Institute of Management Consulting, Inc. and Atsumi & Sakai) (June 2020) [Co-author]
Web Article
- The Legal 500: International Arbitration Country Comparative Guides, Japan chapter, Legalease Ltd. (2025) [Co-author]
- The Legal 500: International Arbitration Country Comparative Guides, Japan chapter, Legalease Ltd. (2024) [Co-author]
- The Legal 500: International Arbitration Country Comparative Guides, Japan chapter, Legalease Ltd. (2023) [Co-author]
- [Survey Document] “Major Laws and Regulations related to FinTech,” The Center for Financial Industry Information Systems (FISC) (December 2022) [Co-author]
- The Legal 500: International Arbitration Country Comparative Guide, Japan chapter, Legalease Ltd. (2022) [Co-author]
- The Legal 500: International Arbitration Country Comparative Guide, Japan chapter, Legalease Ltd. (2021) [Co-author]
- [Research Report] “Trends of Data Protection Regulations in Japan and Overseas and the Responses of Japanese Financial Institutions,” The Center for Financial Industry Information Systems (FISC) (Chapter I, Co-authored, Posted on the Website)
Newsletters
- “Legal Framework in Sri Lanka” (June 2024) [Co-author]
Seminars
-
Speaker at a panel entitled “ALTERNATIVE DISPUTE RESOLUTION – Asia 2050 - Realising the Asian Century Through Trade, Investment and Dispute Resolution,” at the 38th LAWASIA Conference 2025, hosted by LAWASIA, October 12, 2025
- “How to Set Up Your Business in Japan: A Step-by-Step Guide,” hosted by Atsumi & Sakai, July 10, 2025
- “Arbitration Practice in India (Advanced),” hosted by Atsumi & Sakai and Dentons Link Legal, June 25, 2025
- “Sri Lanka Energy: Your Next Investment Horizon,” hosted by Atsumi & Sakai, June 5, 2025
- “ICC YAAF: Introduction to ICC and ICC Arbitration: its past, present and future,” co-hosted by the International Chamber of Commerce, Young Arbitration & ADR Forum (ICC YAAF), Japan Association of Arbitrators (JAA) Kansai Branch and Osaka Bar Association, April 18, 2025
- “Invest in Japan: Legal & Cultural Aspects (An Introduction),” hosted by Atsumi & Sakai and Dentons Link Legal, April 2, 2025
- “Arbitration Practice in India (Introduction),” hosted by Atsumi & Sakai and Dentons Link Legal, February 27, 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
- “Foreign Funding in India: Comparison of FDI and ECB,” at the Financial Lawyer Forum, hosted by Kinzai Institute for Financial Affairs, November 22, 2024
- Moderator at a panel entitled “ICC YAAF: The Place of Cultural Diversity in Business Interactions and Dispute Resolution (from Japan and beyond),” organized by the International Chamber of Commerce, Young Arbitration & ADR Forum (ICC YAAF) and supported by Atsumi & Sakai, November 20, 2024
- “India Legal and Tax Seminar: First Steps in Doing Business in India,” hosted by Atsumi & Sakai and supported by Japan Institute for Overseas Investment (JOI) and Kinzai Institute for Financial Affairs, October 30, 2024
- “Real Estate Investment into India – Issues and Troubles,” hosted by Atsumi & Sakai and Dentons Link Legal, May 31, 2024
- “Asia M&A Investment Seminar,” hosted by Atsumi & Sakai, March 6, 2024
- Panelist at a panel entitled “Alternative Dispute Resolution: Mediation- Arbitration – How Do the Hybrids Fare?” in the 36th LAWASIA Conference 2023, hosted by LAWASIA, November 26, 2023 in Bengaluru, India
- Moderator at a panel discussion entitled “Practice and Prospects of Human Rights Due Diligence in the World,” at a seminar entitled “How to Implement Effective ESG Strategies? Global Trends and Practical Issues,” co-hosted by the Japan Federation of Bar Associations and the International Bar Association, October 2, 2023
- “Care to be Taken by Japanese Investors when Investing in India,” hosted by Atsumi & Sakai and Dentons Link Legal, September 14, 2023
- “Issues faced by a foreign party when undertaking M&A in Japan,” hosted by Atsumi & Sakai and Smith, Gambrell & Russell, LLP, November 30, 2022
- “One Aspect of Conflict between EU Law and Investment Arbitration Seen from the CJEU Ruling in Moldova v. Komstroy,” at the 43rd Annual Conference, hosted by the European Union Studies Association-Japan, November 5 and 6, 2022 (held at Tokyo Keizai University)
- “Recent State of Indian Economy: A Legal & Economic Overview,” hosted by Atsumi & Sakai, sponsored by ICICI Securities Limited, ICICI Bank Limited, and FICCI Japan, October 28, 2021
- Speaker at the presentation entitled “Introductory Remarks” and “Doing Business in India & Japan: Soft Skills,” at the seminar entitled “Doing Business in India,” hosted by Atsumi & Sakai, Link Legal India Law Service, June 28, 2019
- The Best Lawyers in Japan 2026
- International Arbitration
- Litigation
- The Best Lawyers in Japan 2025
- International Arbitration
- Litigation
- The Best Lawyers in Japan 2024
- International Arbitration
- Litigation