Takauji ASHIKAGA separated from the Kenmu Government set up by Emperor Godaigo in Kyoto after the collapse of the Kamakura bakufu (Japanese feudal government headed by a shogun), and received an Imperial decree by the Retired Emperor Kogon of the Jimyo-in line, after which he captured Kyoto in July and August 1336 and led the Retired Emperor into Kyoto.
鎌倉幕府滅亡後に京都に成立した後醍醐天皇の建武政権から離反した足利尊氏は、持明院統の光厳上皇の院宣を受け、建武3年（1336年）6月に京都を確保すると上皇を奉じて入京する。