Genki

Genki (元亀?) was a Japanese era name (年号,, nengō,?, lit. 'year" name) after Eiroku and before Tenshō. This period spanned the years from April 1570 through July 1573. The reigning emperor was Ōgimachi-tennō (正親町天皇 ?).

Read more about Genki:  Change of Era, Events of The Genki Era