Emperor Kōshō

Kōshō
Emperor of Japan
Reign	475 BC – 393 BC (traditional)
Predecessor	Itoku
Successor	Kōan
Born	506 BC
Died	393 BC (aged 113)
Burial	Wakigami no Hakata no yama no e no misasagi (Nara)

Emperor Kōshō (孝昭天皇,, Kōshō-tennō^?); also known as Mimatsuhikokaeshine no Mikoto; was the fifth emperor of Japan, according to the traditional order of succession.

No firm dates can be assigned to this emperor's life or reign, but he is conventionally considered to have reigned from 475 to 393 BC, but he may have lived in the early 1st century.

Modern scholars have come to question the existence of at least the first nine emperors; Suizei's descendant, Emperor Sujin is the first that many agree might have actually existed. The name Kōshō-tennō was assigned to him posthumously by later generations.

Kōshō is regarded by historians as a "legendary emperor". There is insufficient material available for further verification and study. The reign of Emperor Kimmei (c. 509 – 571 AD), the 29th emperor, is the first for which contemporary historiography is able to assign verifiable dates; However, the conventionally accepted names and dates of the early emperors were not to be confirmed as "traditional" until the reign of Emperor Kanmu (737–806), the 50th sovereign of the Yamato dynasty.

In the Kojiki and Nihonshoki only his name and genealogy were recorded. He is believed to be the oldest son of Emperor Itoku; and his mother is believed to have been Amanotoyototsu-hime, who was the daughter of Okishimimi-no-kami. The Japanese have traditionally accepted this sovereign's historical existence, and an Imperial misasagi or tomb for Itoku is currently maintained; however, no extant contemporary records have been discovered that confirm a view that this historical figure actually reigned. He is considered to have been the fourth of eight emperors without specific legends associated with them, also known as the "eight undocumented monarchs" (欠史八代,, Kesshi-hachidai^?).

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