The reason why Takauji ASHIKAGA rose up to defeat the Hojo clan was because he had to prove himself as the third generation since Ietoki, and Sadayo IMAGAWA, the author of "Nan-taihei-ki," claimed that he saw it too.
足利尊氏が北条氏打倒に立ち上がったのは、家時から三代後の子孫としてそれを見せられたからであり、『難太平記』の著者今川了俊も、自分もそれを見たと記している。