One common horror story is bad reactions like severe swelling and redness that don't go away. Some people end up with lumps under their skin which are really visible and can't be easily fixed. Another is when the filler migrates to other parts of the face, changing the shape in an unexpected and often unattractive way.
One way to avoid dermal fillers horror stories is by having a thorough consultation before the procedure. Discuss your expectations clearly with the injector and ask about all the potential risks. Also, choose a reputable clinic. A good clinic will use high - quality fillers and maintain strict hygiene standards. Don't be tempted by very low - cost offers as they may use sub - standard products or have less experienced staff, which can lead to all kinds of problems.
Yes, manga can have fillers. Sometimes authors use them to flesh out characters or settings, or to give themselves more time to plan the main plot. But too many fillers can make the story drag.
The Naruto manga itself doesn't have fillers. Fillers are a common thing in anime to extend the runtime or bridge gaps in the manga's story. But the manga sticks strictly to the main plot.