After the first edition was completed, various editions such as (四點万葉集 and 中院本) and "Shirin Saiyosho" (Commentary of Leaves from a Forest of Words) were handed to Keichu, and he revised the first edition based on these new documents to compose the final version.
初稿本が完成した後、水戸家によって作られた校本（四點万葉集と中院本）と『詞林采葉抄』が契沖に貸し与えられ、それらの新しい資料を用いて初稿本をあらためたのが精選本である。