Initially, the Crown Prince was expected to assume that position, but the conflict between the rule of the ex-emperor Gotoba and that of the Kamakura bakufu was intensified in the course of negotiations for the Crown Prince's assumption of that position.
それにはまず親王が望まれたが、その交渉過程で後鳥羽院政と鎌倉幕府の対立が先鋭化した。