The same thing that happened to all the minor but awesome characters in naruto. The plot is back, they get no screentime. Seriously, I liked the naruto fillers better, it was like "oh hey, an episode with that bug guy, awesome, and it has hinata in it, well, thats my penis set to fap"
Now it's back to the plot and it's Naruto and his homosexual obsession with Sasuke, and of course sakura standing around like a useless bitch and whining about her crippling inferiority complex...
My vote for good characters in shitty shows. Papillon from busou renkin.