<P> The Current Emperor of Japan (今 上 天皇) is Akihito . He was officially enthroned on November 12, 1990 . He is styled as His Imperial Majesty (天皇 陛下), and his reign bears the era name of Heisei (平成). Naruhito, the Crown Prince of Japan, is the heir apparent to the Chrysanthemum Throne . </P> <P> The Executive branch of Japan is headed by the Prime Minister . The Prime Minister is the head of the Cabinet, and is designated by the legislative organ, the National Diet . The Cabinet consists of the Ministers of State and may be appointed or dismissed by the Prime Minister at any time . Explicitly defined to be the source of executive power, it is in practice, however, mainly exercised by the Prime Minister . The practice of its powers is responsible to the Diet, and as a whole, should the Cabinet lose confidence and support to be in office by the Diet, the Diet may dismiss the Cabinet en masse with a motion of no confidence . </P> <P> The Prime Minister of Japan (内閣 総理 大臣) is designated by the National Diet and serves a term of four years or less; with no limits imposed on the number of terms the Prime Minister may hold . The Prime Minister heads the Cabinet and exercises "control and supervision" of the executive branch, and is the head of government and commander - in - chief of the Japan Self - Defense Forces . The Prime Minister is vested with the power to present bills to the Diet, to sign laws, to declare a state of emergency, and may also dissolve the Diet's House of Representatives at will . He or she presides over the Cabinet and appoints, or dismisses, the other Cabinet ministers . </P> <P> Both houses of the National Diet designates the Prime Minister with a ballot cast under the run - off system . Under the Constitution, should both houses not agree on a common candidate, then a joint committee is allowed to be established to agree on the matter; specifically within a period of ten days, exclusive of the period of recess . However, if both houses still do not agree to each other, the decision made by the House of Representatives is deemed to be that of the National Diet . Upon designation, the Prime Minister is presented with their commission, and then formally appointed to office by the Emperor . </P>

Who does the leader of an absolute government depend on and why