Takauji ASHIKAGA and his younger brother Tadayoshi ASHIKAGA saw the ganmon with their own eyes and so did Sadayo (Ryoshun) IMAGAWA according to "Nan-Taiheiki" (a critique of the historical epic "Taiheiki") written by himself.
足利尊氏や弟の足利直義はこれを実見し、今川貞世（了俊）もこれを見たと、貞世の著作である『難太平記』には記されている。