Emperor of Japan
Currently, the Emperor of Japan is the only head of state in the world with the English title of "Emperor". The Imperial House of Japan is the oldest continuing monarchical house in the world. The historical origins of the Emperors lie in the late Kofun period of the 3rd–7th centuries AD, but according to the traditional account of the "Kojiki" (finished 712) and "Nihon Shoki" (finished 720), Japan was founded in 660 BC by Emperor Jimmu, who was said to be a direct descendant of the sun-goddess Amaterasu. The current Emperor is Akihito. He acceded to the Chrysanthemum Throne upon the death of his father, Emperor Shōwa (Hirohito), in 1989. The Japanese government announced in December 2017 that Akihito will abdicate on 30 April 2019.
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.