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 Buretsu
Buretsu was a son of Emperor Ninken and his mother is "Kasuga no Ōiratsume no Kōgō" (春日大郎皇后). His name was Ohatsuse no Wakasazaki no Mikoto (小泊瀬稚鷦鷯尊). He had no children.If Emperor Keitai began a new dynasty as some historians believe, then Buretsu is the last emperor of the first recorded dynasty of Japan.