Born:
 November 8, 1947, Niigata Prefecture
 
Education:
 1970 Kyoto University, Faculty of Engineering
 1972 Kyoto University, Graduate School of Engineering
 
Career:
 1972 joined Ministry of Construction
 2002 Director General of Road Bureau,
    Ministry of Land, Infrastructure and Transport (MLIT)
 2004 Vice-Minister for Engineering Affairs, MLIT
 2005 Vice-Minister of Land, Infrastructure and Transport
 2007 first elected to the House of Councillors
 
(Major posts in the House of Councillors)
 2013 Chairman, Committee on Environment
 2016 Chairman, Committee on Oversight of Administration
 2019 Chairman, Special Committee on
    Regional Revitalization and Consumer Affairs
 2020 Chairman, Committee on Financial Affairs
 2022 Chairman, Committee on Audit

(as of May 11,2023)