For various reasons, including the fact that it is not mentioned in the "Kakai-sho," a commentary from the beginning of the Muromachi period by Yoshinari YOTSUTSUJI, it is believed to have been written later.
室町時代初期の注釈書である四辻善成の『河海抄』に見えないことなどからそれ以後の成立と見られる.