Soft Law and the State-Market Relationship at the University of Tokyo, a Global COE Program, publishes the UT Soft Law Review. All full text articles on the recent issue of M&As and the Law is available at its project site:
http://www.gcoe.j.u-tokyo.ac.jp/en/publications/UTsoftlaw3.pdf
Market for Corporate Control in Japan by Kenichi Osugi
Going-private and the Role of Courts: A Comparison of Delaware and Japan by Wataru Tanaka
The Takeover Regulation in Japan: Peculiar Developments in the Mandatory Offer Rule by Tomotaka Fujita
Legal Education for the Future: Global Perspectives by Daniel H. Foote
The Board Director Training Institute (BDTI) is a "public interest" nonprofit in Japan dedicated to training about directorship, corporate governance, and related management techniques. It is certified by the Japanese government to conduct these activities as a regulated nonprofit. Read a summary about BDTI here, and see a menu of its services for both corporations and investors here.