In the background of court nobles' creation of the books on the study of ancient courtly traditions and etiquette such as 'Kuji Gojuban Utaawase' by Yoshimoto NIJO and 'Kuji kongen (the Rules of Court, a book on court rules of ceremonies and etiquettes written in the Muromachi period)' by Kaneyoshi ICHIJO, there was their purpose to get back the power of the Imperial Court by restoring kuji, but after Onin War, kuji came to remain in name only.
二条良基の『公事五十番歌合』や一条兼良の『公事根源』の公家による有職故実書作成の背景には公事復興による朝廷の権威回復の意図を有していたが、応仁の乱以後は公事の全くの名目化した。