User blog comment:Crazylittlefreakgirl/Fairy Tail Official Pairings?/@comment-187.10.100.22-20120518221638/@comment-72.66.31.250-20120520151642

Referencing the filler doesn't mean he's the one writing it. Saying he's the one writing it implies that he's the one that has the script writing and/or storyboarding credits for the episodes in question, and I'm pretty sure that's not the case. Aside from the character design which it's almost a given he had some hand in, the extent he can be said to have written anything likely consists of him discussing and agreeing with the director on a basic plot outline for the arc. Everything else such as dialogue, scenes, battles, etc, is left up to the anime's writers.