Board Thread:Theories and Speculation/@comment-45510280-20200416210937/@comment-6769189-20200420023755

@baby: Canon is what is considered to be a part of the story. Usually what is made by the original creator(in this case Kishimoto) in the original medium(in this case the manga) is considered canon unless he states other materials to be part of the canon(such as Naruto the Last).

Usually, any additions via adaptation are not considered canon. Examples of this are filler arcs and extended fight sequences.

Story changes made by adaptation are usually not canon. For example, in the anime, Naruto met the 6 tails Jinchuriki, and recognized him in the war arc. In the manga, Naruto never met him, and in the War arc. This is a good example because them meeting in the anime happened in 2010. 2 years later, Kishimoto didnt include a scene of them meeting because it wasnt a part of the story he wrote

Things are trickier now because the New Era Project has multiple creators across multiple mediums work collaboratively and sometimes even cross mediums. And an official timeline was released that inclided the novels

The anime also adapted the Itachi novels but made some heavy changes, probably because of censorship.

@snapper: YM isnt omnidirectional and he has a severe chakra limitation. It also wouldnt protect against a lot of Rinnegan techniques or literally anything that would throw him off his feet. He was more valuable as an inside guy