Born:
 April 25, 1967, Shizuoka Prefecture
 
Education:
 1989 studied at Tel Aviv University, Israel, for 1 year
 1991 Graduated from Otterbein University, Ohio, United States,
    Political Science and International Affairs
 1991-93 studied at Graduate School of the Hebrew University,
      Jerusalem, Israel
 
Career:
 1994 Member, Kikugawa Town Assembly (1 term)
 2001 first elected to the House of Councillors
 
(Major posts in the House of Councillors)
 2009 Chairman, Committee on Foreign Affairs and Defense
 2013 Chairman, Special Committee on
    Political Ethics and Election System
 2017 Chairman, Committee on Cabinet
 2021 Chairman, Special Committee on
    Okinawa and Northern Problems
 
(Major posts in the Government)
 2009 Senior Vice-Minister of Defense
 2012 Senior Vice-Minister for Foreign Affairs
 
(Major posts in a political parties)
 2013 Chair, Democratic Party of Japan Caucus Diet Affairs
    Committee in the House of Councillors
 2016 Chair, The Democratic Party Caucus Diet Affairs Committee
    in the House of Councillors
 2018 Secretary General, Democratic Party For the People Caucus
    in the House of Councillors
 2020 Secretary General, Democratic Party For the People

(as of May 11,2023)