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.
Enthronement
The Emperor of Japan attends an enthronement ceremony soon after his accession; the last such ritual was held in 1990 for the current sovereign, Akihito. The Imperial Regalia consist of a sword, known as "Kusanagi", a jewel, known as "Yasakani no magatama", and a mirror, called "Yata no Kagami". Unlike most other monarchies, Japan has no crown for its ruler.