Board Thread:Naruto Discussions/@comment-29752445-20160826022014/@comment-732150-20160826161020

Long story short: manga and databooks said very little about how stuff went down back in Hagoromo's time, and then the anime came in and took a huge dump on it, managing to create contradiction on top of contradiction, despite there being very little to contradict. I think the only thing in the entire franchise that is more rife with contradiction is the Blood Prison movie.