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.
Heisei period
In August 2016, Emperor Akihito gave a televised address to the nation, in which he expressed concern that his age would one day stop him from fulfilling his official duties. This was an implication of his wish to retire. The Japanese Diet passed a law in June 2017 to allow the throne to pass to Akihito's son, Naruhito. After meeting with members of the Imperial House Council, Prime Minister Shinzō Abe announced that 30 April 2019 would be the date set for Akihito's abdication. The Era of Naruhito's reign will begin the next day.