| 1987 |
Awarded the 18th Soichi Oya Nonfiction Award for Mikado
no Shozo (The Mikado Code) |
| 1996 |
Awarded the 1996 Bungei Shunju Reader’s Award for Nipponkoku
no Kenkyu (A Study of Japan) |
| 2002 |
Appointed by then Prime Minister Koizumi to the Promotion Committee for the Privatization of the Four Highway-Related Public Corporations |
| 2006 |
Appointed Professor, Tokyo Institute of Technology |
| 2007 |
Appointed Vice Governor of Tokyo |
| 2012 |
Elected Governor of Tokyo |