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 Go-Shirakawa
Emperor Go-Shirakawa (後白河天皇 "Go-Shirakawa-tennō") (October 18, 1127 – April 26, 1192) was the 77th emperor of Japan, according to the traditional order of succession. His reign spanned the years from 1155 through 1158, while he remained effectively in power for almost 37 years.