>>15321086
>The original anime followed the manga perfectly until it didn't.
That is the issue with adaptations, in that most are at best done to capitalize on the original work's popularity while it's still somewhat new, or at worst, simply meant to act as advertisement for the original work. And once they catch up, there's a number of options, none of which especially appealing:
>Filler hell while waiting for enough new content to adapt (big name shonen being pretty awful about such, Bleach especially with whole seasons).
>Deliberate deviation from the source material, be it with or without the creator's approval (like FMA 2003).
>Years of hiatus to avoid filler hell, resulting in a show with only a handful of "seasons" of content taking the better part of a decade, if not longer, to properly adapt (like Index having seven years between season 2 and the upcoming season 3). Though it should be said that in the long run, this can be better for those watching in the future once the adaptation has finished.
Also a few issues stemming less from being shilling and more from seasonals and funding.
>Sudden ending to adaptation that fucks the pacing because it hit 12/13/24/26 episode limit (depends on how the length of a "season" is considered). Better go read the source if you want to see how things actually worked out.
>Adaptations that just end abruptly with no conclusion, be it licensing withdrawn, funding being pulled, budget running out, etc (like Flame of Recca).
Part of why I'm much more prone to anime original series, or at least adaptations started closer to the original work being completed. Setting can also factor in: something like Kino's Journey, where there isn't even an end goal and the weight is in what is shown along the way, worked well even as an incomplete adaptation.