Koji
Kōji (弘治) was a Japanese Era after Temmon and before Eiroku and spanned from 1555 to 1558. Reigning emperors were Go-Nara and Ōgimachi.
Change of Era
Because of various wars, on the 10th day, 23rd day of Temmon 24 (1555), the era became Kōji
ja:弘治 (日本)