During the Meiji period, an Imperial decree dated March 3, 1911 established that the legitimate reigning monarchs of this period were the direct descendants of Emperor Go-Daigo through Emperor Go-Murakami, whose Southern Court (南朝, nanchō) had been established in exile in Yoshino, near Nara.[3]
Change of era
1389, also called Kōō gannen (康応元年): The new era name was created to mark an event or series of events. The previous era ended and the new one commenced in Kakei 3.
In this time frame, Genchū (1384–1393) was the Southern Court equivalent nengō.[4]
Events of the Kōō era
1389 (Kōō 1): Dissension continues in Toki family in Mino.[5]
1389 (Kōō 1): Yoshimitsu pacifies Kyūshū and distributes lands; Yoshimitsu opposed by Kamakura kanreiAshikaga Ujimitsu.[5]