In 2001, Prime Minister Koizumi Jun’ichirō launched a crusade to privatize Japan’s postal services. The plan was hailed as a necessary structural reform, but many bemoaned the loss of traditional institutions and the conservative values they represented. Few expected the plan to succeed, given the staunch opposition of diverse parties, but four years later it appeared that Koizumi had transformed not only the post office but also the very institutional and ideological foundations of Japanese finance and politics. By all accounts, it was one of the most astonishing political achievements in postwar Japanese history.