Its compilation was difficult and took nearly 20 years from planning to final selection, involving the political dispute between the Jimyo-in line and the Daikakuji line, and the conflict between the poetic houses they supported, Kyogoku and Nijo.
持明院統・大覚寺統両統の政争に、それぞれが庇護した歌道の家である京極派・二条派の対立が絡み、企画から選定までに20年近い歳月を要した複雑な成り立ちを持つ。