Empress Kōken
was a after "Tenpyō-shōhō" and before "Tenpyō-jingo." This period spanned the years from August 757 through January 765. The reigning Emperor was , who was a mere figurehead while authority was in the hands of Fujiwara no Nakamaro and during the later years of the era increasingly with retired Empress Kōken and the monk Dōkyō.