After the turmoil known as the Kanno-no-Joran War (turmoil of the Kanno), which was triggered by the Ashikaga clan's infighting, Takauji Ashikaga surrendered to the Southern Court, thus the Shohei unification was established and this allowed for his success in the recovery of Kyoto and Kamakura.
観応の擾乱と呼ばれる足利氏の内紛による騒乱がはじまり、尊氏が南朝に降伏して正平一統が成立すると、これに乗じて一時は京都と鎌倉の奪回にも成功する。