One cool Naruto fanfiction could be about a new character with a rare bloodline introduced during a filler arc. This character might have the power to control shadows in a unique way, different from Shikamaru's. The story could revolve around their journey to master this power and how they interact with the main Naruto characters during the filler events.
In the fanfiction, it might have Naruto using different jutsu or having different power levels compared to the canon battle. For example, he could have some new techniques that were not in the original story. Maybe his connection with the Nine - Tails is portrayed differently.
In general, the status of Naruto novels as canon can be a bit ambiguous. Some are closely tied to the main plot and characters, while others might be more like side stories or expansions that don't have a major impact on the core storyline.
Filler words also play a role in the development of the narrative voice. An omniscient narrator might use different filler words compared to a first - person narrator. The choice of filler words can also change over the course of the novel as the character grows or the situation changes. For instance, a character who becomes more confident might use fewer filler words as the story progresses.
In novels, filler words can also be used for character differentiation. A nervous character might use more 'um's and 'ah's compared to a confident one. They can be a subtle tool for characterization. Moreover, in some cases, filler words can be used to create a regional or social dialect. For example, certain words might be more common in a rural setting's dialogue, which can help to paint a more vivid picture of the world in the novel.