Kōji (弘治) was a Japanese era name (年号, nengō; "year name") after Tenbun and before Eiroku. This period spanned the years from October 1555 through February 1558. Reigning emperors were Go-Nara-tennō (後奈良天皇) and Ōgimachi-tennō (正親町天皇).
Kōji (弘治) was a Japanese era name (年号, nengō; "year name") after Tenbun and before Eiroku. This period spanned the years from October 1555 through February 1558. Reigning emperors were Go-Nara-tennō (後奈良天皇) and Ōgimachi-tennō (正親町天皇).
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Eiroku (永禄) was a Japanese era name (年号, nengō; "year name") after Kōji and before Genki. This period spanned the years from February 1558 through April 1570. The reigning emperor was Ōgimachi-tennō (正親町天皇).