It is a style in which someone asks Teika to correct a waka, and Teika teaches him while preaching 10 types of waka rules of behavior (the ushin (sentiment with artistic sensibility) style, the Yugen (the subtle and profound) style, style with concrete meaning, balanced and harmonious style, elegant style with sense of tension and neatness, style with distinct visual depictions, intellectually artful style, style with uncommon idea, complicated and skilled style, and strong and sharp style), among which Teika especially placed importance on the ushin style.
形態はある人が毎月定家に和歌の添削を請い、それに対し定家が和歌の作法について10種類の有り様（有心体、幽玄な様、事の然るべき様、麗しい様、長高な様、見様、面白い様、一節ある様、濃い様、鬼拉体）を説きながら指導したもので、特に有心体を重要視したものである。