These waka, which are representative of this form of poetry, date back as early as the seventh century and were assembled together in the thirteenth century by Fujiwara no Teika, a compiler of the Shin Kokin Wakashu."NIPO-322", "2523084"
The Kokin Wakashu (Collection of Ancient and Modern Japanese Poetry), in the Heian period, and the Shin Kokin Wakashu (New Collection of Ancient and Modern Japanese Poetry), in the Kamakura period, are both waka anthologies that were compiled by Imperial order."NIPO-257", "2468469"