Book of Song
The name (pronounced Mimana in Japanese, Imna in Korean, and Renna in Mandarin Chinese) is used over 200 times in the 8th-century Japanese text "Nihongi". Much earlier it is mentioned in the 5th-century Chinese history text the "Book of Song" in the chapter about the State of Wa. It is also used in two Korean epigraphic relics, as well as in several Korean texts, including "Samguk Sagi".