1967 : Graduated from Aichi Prefectural Asahigaoka Senior High School
1973 : Graduated from the University of Tokyo, Faculty of Law, Private Law Course and Public Law Course
1973 : Joined the Ministry of the Environment, Japan
2008 : Retired from the Ministry of the Environment, Japan
2008 : Served as Special Adviser, Institute for Global Environmental Strategies (till March 2012, Senior Fellow from April 2012)
2009 : Professor, Aoyama Gakuin University, School of International Politics, Economics and Communication (Environmental Policy) (till March 2016)
2009 : Began serving as Nagoya City Management Adviser
2011 : Began serving as Aichi Prefecture Policy Adviser
2014 : Joined Waseda Legal Commons, LPC
2016 : Served as Special Adviser, Tokyo Metropolitan City (till September 2017)