Emperor of Japan
The current Emperor on the throne is typically referred to as "Tennō Heika" (, "His (Imperial) Majesty the Emperor"), "Kinjō Heika" (, "His Current Majesty") or simply "Tennō", when speaking Japanese. The current Emperor will be renamed "Daijō Tennō" (, Retired Emperor), often shortened to "Jōkō" (), upon his planned retirement on 30 April 2019, and renamed "Heisei Tennō" () after his death and will then be referred to exclusively by that name in Japanese. In Japanese culture, it is considered a major faux pas to refer to a living Emperor by his posthumous name, although the posthumous name is the same as the era, which is used in official documents.
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.