Everything besides the filler of this show is truly good. The story is well-designed, the art, sound effects, and music are all very high quality. The show really shines in terms of characters, featuring many characters who all express pretty good development. The story does kinda span over what seems like too many episodes, but for the most part it does deliver high quality action and character interaction very effectively. Well, until you get to the non-canon filler.
Despite the fairly low rating I'm giving this anime, I must stress that several of the most impressive moments in anime history do occur here. Character interaction at some points has never been better, and depending on the type of person you are, this anime does have the potential to bring tears to your eyes as your mind is blown away by what could be the most appropriate ending to the best fight scene you may have seen in your entire life.
Really though, you have to wonder the logic behind several of the filler episodes. It's possibly the dumbest thing that happened to what could have been one of the highest quality shows in existence.
