Kakuei Tanaka
Today, the head of the Japanese government is the Prime Minister; the usage of the term "shogun" has nevertheless continued in colloquialisms. A retired Prime Minister who still wields considerable power and influence behind the scenes is called a , a sort of modern incarnation of the cloistered rule. Examples of "shadow shoguns" are former Prime Minister Kakuei Tanaka and the politician Ichirō Ozawa.