Born:
 June 13, 1956, Hyogo Prefecture
 
Education:
 1980 Nara University of Education, Faculty of Education
 
Career:
 1980 Teacher, Public Junior high school
 1986 Teacher, Japanese School in New Delhi, India
 2002 Deputy Secretary General, Hyogo Prefecture
    Teachers' Union
 2004 Deputy Director, Hyogo Education and Cultural
    Research Institute
    first elected to the Senate
 2010 second elected to the Senate
 2019 third elected to the Senate
 2025 fourth elected to the Senate
 
(Major posts in the Senate)
 2013 Chairman, Committee on Cabinet
 2014 Chairman, Committee on Cabinet
 
(Major post in the Government)
 2011 Special Advisor to the Prime Minister
 
(Major posts in a political party)
 2020 Chairperson, The Constitutional Democratic Party
    of Japan (CDP) Caucus in the Senate
 2026 President, CDP
 
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)