Government of Japan
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.
Constitution of Japan
Under the constitution, the Emperor is "the symbol of the State and of the unity of the people". The Emperor carries out most functions of a head of state, formally appointing the Prime Minister and Chief Justice of the Supreme Court, convoking the National Diet and dissolving the House of Representatives, under the advice of the Cabinet, and also promulgating statutes and treaties and exercising other enumerated functions.