Although he has been praised as a loyal subject of the Southern Court for a long time, as there is no other literature to show his actual involvement apart from the war chronicle "Taiheiki," some people still strongly believe that he was a fictional character.
古くから南朝(日本)の忠臣として讃えられてきたが、具体的な活動を示す文献が軍記物語の『太平記』以外にはないために架空の人物とする説も根強い。