| Sep. 2011 | Chief Cabinet Secretary (Noda Cabinet) |
| Jan. 2011 | Deputy Secretary General, The Democratic Party of Japan |
| Sep. 2010 | Senior Vice Minister of Health, Labour and Welfare
(Reshuffled Kan Cabinet) |
| Jun. 2010 | Senior Vice Minister for Foreign Affairs (Kan Cabinet) |
| Apr. 2010 | Vice President, Ashinaga |
| Sep. 2009 | Chairman, Committee of Health, Labour and Welfare, House of Representatives |
| Sep. 2007 | Chairman, Special Committee on Okinawa and Northern Problems, House of Representatives |
| Apr. 2006 | Member, Board of Directors, Ashinaga |
| Oct. 2004 | Chairman, Special Committee on Children and Youth Affairs |
| Apr. 1998 | Chairman, Japan-Brazil Exchange Association |
| Jul. 1993 | Elected to the House of Representatives (first time) and joined Japan New Party |
| Mar. 1989 | Executive Director, Japan-Brazil Exchange Association |
| Mar. 1973 | Graduated from Hiroshima University, Faculty of Engineering |
