Also, there is something antiestablishment in the tale, so the author couldn't have been a descendant of the Fujiwara clan who held power in those days, therefore it is considered that the tale would have been written by a male writer who was familiar with the study of the Chinese classics, Buddhism, folklore, and able to write kana letters on paper, which was precious.
また、物語内容に反体制な要素が認められることから当時権力を握っていた藤原氏の係累ではなく、漢学・仏教・民間伝承に精通し、仮名文字を操ることができ、貴重だった紙の入手も可能な人物で性別は男性だったのではないかと推定されている。