The feature is selecting poems from not only chokusen wakashu (anthology of Japanese poetry compiled by Imperial command) but also shisen wakashu (personal collection of poetry) such as "Shoku Shika Wakashu" (The Continued Waka Collection of Verbal Flowers).
勅撰集だけでなく、『続詞花和歌集』などの私撰集からも採録しているのが特徴。