However, when the manuscript of Tosa Nikki (Tosa Diary) made by Teika was studied, it was found that it contained the parts which he revised on purpose, so some people are asking for a restudy to see if the manuscripts of the Aobyoshi-bon line had really not been revised.
但し青表紙系の本文が本当に元の本文に手を加えていないかどうかについては定家による土佐日記の写本を調べると、本文を意識的に整えたと見られる部分もあることなどから、再検討の必要が唱えられている。