One reason could be for the sake of creating drama. Fanfic writers often like to explore extreme scenarios that deviate from the original story to generate intense emotions and reactions from readers.
Some writers might want to explore different relationship dynamics. They may be curious about how the characters would interact in such an unexpected and controversial situation. It could also be a way to test the boundaries of the Naruto universe's relationships and see how fans would respond to such a radical change.
It could be a form of self - expression for the writer. Maybe they have a unique view on the characters and want to put their own spin on the relationships. Or perhaps they are trying to address some underlying issues or themes in the original Naruto story through this extreme plot device. However, it should be noted that this is a very non - canonical and often controversial concept within the Naruto fan community.
It could also be a way for some fans to explore alternative relationship dynamics. Maybe they were not fully satisfied with how the relationships in the original Naruto story developed. For example, they might have always thought there was some unspoken tension between Naruto and Sakura that could have led to something more, and this is their way of exploring that idea in a fictional and extreme way. However, this does not justify the unfaithful nature of the plot.
Well, it could be that the writer wants to explore different character traits. Maybe they want to see how Naruto would react in a situation that goes against his moral code, or how Hinata would handle such a betrayal. It's a form of character study through a very controversial and unorthodox plot. However, this doesn't mean it's a positive or well - received concept in general.
Well, one reason could be that some fans are just exploring alternative storylines out of boredom. They might think it's interesting to see what would happen if they break the established relationships in the Naruto world. Another reason could be that they are trying to add more drama to the story. However, these fanfics don't represent the true nature of the Naruto characters as they are in the official series.
One reason could be for the sake of creating drama. Writers might want to explore how the Naruto universe would be shaken up by such an event. It could also be a way to explore different character aspects of Naruto and Hinata that aren't shown in the original, like how Naruto would react to such betrayal.
One possible reason could be a misunderstanding. Maybe Naruto was in a situation where it looked like he was cheating, but in reality, it was all a big mix - up. Another reason could be that the writer of the fanfiction wants to explore a darker side of Naruto's character. Or perhaps there's some sort of outside influence, like an enemy using some kind of mind - control on Naruto to make him act out of character.
In a fanfic like this, it might start with Hinata feeling neglected by Naruto due to his busy Hokage duties. Kiba, being an old friend, is always around to offer support. But this is a very uncharacteristic plot as Hinata is deeply in love with Naruto in the original series. It would likely cause a lot of drama and conflict within the Konoha community.
Most fanfics with such a premise are not likely to have a positive message as cheating is an unethical behavior. However, some might use it as a starting point to explore complex relationships and redemption arcs, but that's rare.
Naruto would be extremely hurt. He loves Hinata deeply and to find out she cheated with Kiba would be a huge blow to him. He might go into a state of shock and disbelief at first.
In fanfiction, Naruto might be jealous because he thinks that Kiba has something he doesn't when it comes to Hinata. For example, Kiba could be more confident around Hinata, while Naruto is still a bit shy about his feelings for her. This contrast could fuel Naruto's jealousy.
Some people might write it because they prefer other characters over Naruto, Hinata, and Sakura. They could be trying to promote their favorite characters by putting these three down in their fanfiction.