One theory states that the author defended Emperor Gohorikawa, who was helped to the throne by the Kamakura bakufu, and his father, Gotakakurain (Imperial Prince Morisada), who was placed in the cloister government without being Emperor.
一説には幕府によって擁立された後堀河天皇とその父で天皇の位を経ずに院政を行う事になった後高倉院（守貞親王）の立場を擁護したものと見る説がある。