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.
Emperor Kōrei
Kōrei is regarded by historians as a "legendary emperor" and there is a paucity of information about him. There is insufficient material available for further verification and study. The reign of Emperor Kinmei ( – 571 AD), the 29th emperor, is the first for which contemporary historiography is able to assign verifiable dates; However, the conventionally accepted names and dates of the early emperors were not to be confirmed as "traditional" until the reign of Emperor Kanmu (737–806), the 50th sovereign of the Yamato dynasty. 
In the "Kojiki" and "Nihon Shoki" only his name and genealogy were recorded. He is believed to be son of Emperor Kōan; and his mother is believed to have been Oshihime, who was the daughter of Ametarashihiko-Kunio-shihito-no-mikoto. The Japanese have traditionally accepted this sovereign's historical existence, and an Imperial "misasagi" or tomb for Kōrei is currently maintained; however, no extant contemporary records have been discovered that confirm a view that this historical figure actually reigned. He was the sixth of eight emperors without specific legends associated with them, also known as the .