Born:
 October 20, 1958, Tokyo
 
Education:
 1981 Waseda University,
    School of Political Science and Economics
 
Career:
 1986 graduated from The Matsushita Institute of
    Government and Management
 Secretary to a Member of the House of Councillors
 1993 Member, House of Representatives (4 terms)
 2007 first elected to the House of Councillors
 
(Major posts in the House of Councillors)
 2013 Chairman, Committee on Fundamental National Policies
 2018 Chairman, Committee on Land and Transport
 2020 Chairman, Committee on Environment
 2022 Vice-President
 
(Major posts in the Government)
 2009 Senior Vice-Minister of Health, Labour and Welfare
 2010 Senior Vice-Minister of Health, Labour and Welfare
 2011 Deputy Chief Cabinet Secretary
 2012 Minister of the Environment
    Minister of the Restoration from and Prevention of
    Nuclear Accident
    Minster of State for the Nuclear Emergency Preparedness
 
(Major posts in a political parties)
 2016 Vice-President, The Democratic Party
 2019 Chair, The Constitutional Democratic Party of Japan Caucus
    in the House of Councillors

(as of May 11,2023)