Assistant Professor (Corporate Law), The University of Tokyo Law School, 2004. Lecturer in Law (International Taxation), St. Paul's (Rikkyo) University, 1994; Lecturer in Law (International Transaction Law) Chuo University, 1999; Lecturer in Law (Corporation), The University of Tokyo, 2000. With Paul, Weiss, Rifkind, Wharton & Garrison, New York, 1997-1998. Author: "Strategy for Hostile Takeover Defense," Shoji Homu, 2004—; "New Japanese Corporate Law," Shoji Homu, 2004—; "Japanese Corporate Law - English Translation of Japanese Commercial Code," Shoji Homu, 2004—; New Strategy for Corporate Governance, Shoji-Homu, 2002; Business Law and Practice in the Era of Information Technology, Nikkei BP, 2002. New Equity Finance and Capital Structure, Yuuhikaku, 2002; Treasury Stock Practice, Shoji-Homu, 2001; Corporate Spin-off in Japan, Shoji-Homu, 2000; Corporate Legal Forms Annotated/Corporate V-Foreign Corporations, Sanseido Co., Ltd., 1994; "Japanese Corporate Governance," Japanese Commercial Law Review, 1998. Government Advisor for Reform of Japanese Corporate Law, Corporate Governance, LLC system, and Taxation for Mergers and Acquisitions, etc.