The University of Tokyo (LL.B., 1975)
Research Associate, Faculty of Law, The University of Tokyo (1975)
Associate Professor, Faculty of Law, The University of Tokyo (1978)
Visiting Professor, Harvard Law School (1991-1992)
Professor, The University of Tokyo Graduate Schools for Law and Politics (1991-2013)
The University of Tokyo (LL.D., 2004)
Professor, Waseda Law School (2013-2023)
Emeritus Professor, The University of Tokyo (2013-)
Emeritus Professor, Waseda University (2023-)

Major Activities

Secretary of Commercial Code Subcommittee, Legislative Council, Ministry of Justice (1983-1999)
Secretary of Business Accounting Council, Ministry of Finance (1985-1986)
Diplomatic Secretary (Representative of Japanese Government to United Nations Commission on International Trade Law) (1987-2004)
Associate Member of Telecommunication Council, Ministry of Posts and Telecommunications (currently the Ministry of Internal Affairs and Communications) (1988-1996)
Director of Japan Association of the Law of Finance (1992-2014)
Associate Member of Agricultural Policy Council, Ministry of Agriculture, Forestry and Fisheries (1996)
Secretary of Bankruptcy Law Subcommittee, Legislative Council, Ministry of Justice (1996-2001)
Temporary Member of Central Government Asset Council, Ministry of Finance (1998-2001)
Member of First Subcommittee, Financial System Council, Financial Services Agency (1998-2001)
Chairman of Steering Committee, Life Insurance Policyholders Protection Corporation of Japan (1998-2011)
Member of Civil Code Subcommittee, Legislative Council, Ministry of Justice (1999-2001)
Visiting Investigator of Investigation Section, Committee on Judicial Affairs, House of Council, National Diet of Japan (1999-2000)
Consultant to Japan Securities Dealers Association (1999-2002)
Temporary Member of Legislative Council, Ministry of Justice (2001-2008)
Member of Financial System Council, Financial Services Agency (2001-2011)
Temporary Member of Fiscal System Council, Ministry of Finance (2001-2011)
Director of Japan Association of Private Law (2001-2007)
Member of Postal Services Policy Council (2003-2008)
Director of Land Institute of Japan (2003-2005)
Member of Business Accounting Council, Financial Services Agency (2005-2015)
Temporary Member of Council for Small and Medium Enterprise Policy, Ministry of Economy, Trade and Industry (2005-2006)
Chief Director of Japan Association of Private Law (2005-2007)
Chief Director of Japan Association of the Law of Finance (2005-2014)
Deputy Director-General of Supervisory Bureau, Financial Services Agency (2006-2008)
Temporary Member of Social Capital Development Council, Ministry of Land, Infrastructure, Transport and Tourism (2007-2009)
Bar Examiner at National Bar Examination Commission (New National Bar Examination) (2008-2009)
Director of Financial Accounting Standards Foundation (2009-2015)
Member of Legislative Council, Ministry of Justice (2010-)
Chairman of Corporate Legislation Subcommittee, Legislative Council, Ministry of Justice (2010-2012)
Director of Type II Financial Instruments Firms Association (2010-)
Director of Life Insurance Policyholders Protection Corporation of Japan (2011-)
Member and Chairman of Financial System Council, Financial Services Agency (2015-2019)
Member of The Japan Academy (2023-)
Outside Director of Shiseido Company, Limited (2018-)