This isn't an opinion. Filler is anything not created by the creator of the series. So for example, Sasuke using rasengan is filler. He never used it in the manga and never was hinted at knowing the technique.
This isn't an opinion. Filler is anything not created by the creator of the series. So for example, Sasuke using rasengan is filler. He never used it in the manga and never was hinted at knowing the technique.
When did Sasuke use Rasengan in the manga?
When did Sasuke use Rasengan in the manga?
SasuSaku