User blog comment:FairyRaven/Fairy Tail Chapter 372: Breach, Review and Commentary/@comment-3424593-20140221134149/@comment-2214433-20140221141234

Yeah but Naruto movies are completely out of story, the OVA explains something that is constantly shown in the canon story and if nothing in the manga contradicts it and it's written by Mashima, I see no reason to doubt its credibility :P