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.
Naruhito, Crown Prince of Japan
On 1 December 2017, the government announced that the crown prince would be proclaimed emperor upon the abdication of his father, making this the first time in history that such a move would be officially made public in advance.