Kōshō
Kōshō (康正?) was a Japanese era name (年号, nengō,?, lit. "year name") after Kyōtoku and before Chōroku. This period spanned the years from July 1455 through September 1457. The reigning emperor was Go-Hanazono-tennō (後花園天皇?).
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Wikipedia
Kōshō (康正?) was a Japanese era name (年号, nengō,?, lit. "year name") after Kyōtoku and before Chōroku. This period spanned the years from July 1455 through September 1457. The reigning emperor was Go-Hanazono-tennō (後花園天皇?).