After the death of FUJIWARA no Sadaie, who had been a central figure in the compilation of "Shin kokin wakashu," his son Tameie became a mentor of the Tanka Composers' Society, but after Tameie passed away, both the Fujiwara family and the Tanka Composers' Society were divided into three schools: the NIJO, KYOGOKU and REIZEI.
『新古今和歌集』編纂の中心人物だった藤原定家の死後は、その子の為家が歌壇の指導者だったが、為家が亡くなると、家系も歌壇も二条派・京極派・冷泉派の三派に分かれた。