Codrington Corporate Governance Japan (CCGJ) is a unique consulting and research company based in Japan and U.K. that provides services and advice relating to corporate governance to investment management firms. Many of its clients are foreign investment firms investing in Japanese companies. Since 2002, CCGJ, with its wide range of experience in the area of investment management and investment banking, has been promoting capital efficiency, the core of corporate governance, on behalf of its clients to Japanese top management teams.
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.