So, it says at the first part of the book that 'Nikyoku Santai (Two performances; songs and dance, and three roles; senior men, women, and warriors) should be practiced, using the quotation from the books in the past.
そのために『至花道』などで理論化された「二曲三体」の習道を行うよう、過去の著作を引用しつつ説いている。