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.
Emperor Murakami
In 944, he was appointed crown prince and ascended the throne two years later.Murakami's maternal uncle Fujiwara no Tadahira remained as the "Sessho" regent until 949. After the death of Tadahira, there was no regent and although contemporaries praised Murakami as the emperor who governed the state directly, in reality the Fujiwara clan seized power and ruled Japan. The brothers Fujiwara no Saneyori and Fujiwara no Morosuke became the "de facto" rulers of Japan.Murakami was a central figure in Heian period culture. He was also a skilled flute and koto (Japanese harp) player.The actual site of Murakami's grave is known. This emperor is traditionally venerated at a memorial Shinto shrine ("misasagi") at Kyoto.