Lawyer of the Hokkadio University, Japan, and Master of the same university. He also holds a Masters (LL.M.) at the University of Michigan, USA
He has been Associate Professor of Law at the University of Kyushu and Kanazawa University, Member of the Special Council of the Structure of the Industry, the Ministry of International Trade and Industry; he has also been researcher at the University of Michigan.
He is currently Professor of Law, University of Hokkaido. Member of the Arbitration Committee, Japan International Criminal Court and member of the Japanese delegation to the UNCITRAL Working Group VI (Security Interests).