Born:
 June 4, 1953, Saitama Prefecture
 
Education:
 1979 Josai Dental University (now Meikai University,
    Faculty of Dentistry)
 
Career:
 Dentist
 1995 Member, Saitama Prefectural Assembly (3 terms)
 2003 first elected to the Senate
 2004 second elected to the Senate
 2010 third elected to the Senate
 2016 fourth elected to the Senate
 2022 fifth elected to the Senate
 
(Major posts in the Senate)
 2007 Chairman, Committee on Education, Culture and
    Science
 2015 Chairman, Research Committee on Deflation-Ending
    Measures and Strengthening Public Finance for
    Nationals' Life
 2024 President
 
(Major posts in the Government)
 2006 Parliamentary Vice-Minister for Foreign Affairs
 2013 State Minister of Internal Affairs and
    Communications
    State Minister of Cabinet Office
 
(Major posts in a political party)
 2017 Chairperson, Liberal Democratic Party (LDP) Diet
    Affairs Committee in the Senate
 2019 Chairperson, LDP Members' General Assembly in
    the Senate
 
Note: The Sangiin, which had been known as the House of Councillors, is called the Senate in English as of August 2026.

(as of October 26,2026)