Board Thread:Wiki Discussions and Support/@comment-2140588-20150318152949/@comment-3279282-20150405090737

As I surely explained before, it doesn't matter if Kishimoto wrote something or not. That doesn't make it any more or less canon. Canon is defined by what the main series is and in this case, it's the manga. So the manga isn't canon because Kishimoto wrote it, but because it's the main project, so to speak. Everything derived from that - movies, games, even the normal anime - is semi-canon. The tenth movie is an exception because it was stated to be a chapter in movie form.