I thought finally episode 316 "Edo tensei Rengogun" was back to canon. Now they've added a few more episodes which I'm guessing are fillers judging by the titles?
Anime filler extends the distance between anime and manga so the anime doesn't get too far ahead. If this happens, the anime will be just like Rurouni Kenshin, where the anime was farther than the manga and the anime had to be closed for awhile.
The new story arc should be released on the sixth of June.
They just need to extend canons far more by a significant amount and reduce the fillers...then it wouldn't be as bad. Because I love both the anime and manga.
The manga is epic in it's own way, and the anime is epic in it's own way. For me with the manga, I can extend my own imagination on how the situation is happening, but the anime shows me the action and it's sooo epic too. I love both