Perhaps in this fanfic, Naruto discovers a dark secret about the village hidden in the shadows. This secret could be something so immoral or dangerous that he can't stand being associated with the village anymore. So, he becomes a rogue ninja to expose this secret. He might face off against his former friends who are still loyal to the village at first, but as the truth starts to unfold, they may come to understand his reasons. He would then be on a path full of challenges, constantly hunted by the village's ninja forces while trying to bring the truth to light.
In a 'naruto becomes a rogue ninja fanfic', it could start with Naruto being ostracized by the village due to his growing power which some elders fear. They try to suppress him, and Naruto, feeling betrayed, decides to leave and become a rogue ninja. He then might go on a journey to find a new place where he can be accepted for who he is, and along the way, he could meet new allies and enemies alike. He may also develop new jutsu away from the traditional teachings of the village.
Well, one possibility is that Naruto feels betrayed by the Hidden Leaf Village. Maybe they wrongly accused him of a serious crime. So, he decides to go rogue. He could then start traveling alone, using his skills to survive and avoid capture. He might also meet other outcasts who understand his situation.
It could be a group of rogue ninja who have a vendetta against Naruto. They might see his new status as a rogue as an opportunity to take him down. Maybe they were once defeated by Naruto when he was in the village, and now they want revenge. Also, there could be some hidden shinobi clans within the village who oppose Naruto's new path and try to stop him for their own reasons, like protecting the village's reputation or their own power within the village.
In a 'naruto goes rogue' fanfic, the plot could involve Naruto feeling betrayed by the Hidden Leaf Village. Maybe he discovers some dark secrets about the village leaders. For example, he might find out they were using him all along. So, he decides to break away and form his own group of outcasts who also felt wronged by the village.
In this fanfiction, Naruto might gain new and unique ninja skills. Maybe he discovers a long - lost jutsu that makes him even more powerful than in the original story.
Sasuke is often a popular character in these fanfics. His own stint as a sort of rogue ninja makes him a natural fit. Also, Orochimaru, who was a rogue ninja for a long time, is frequently included. He has a lot of mystery and power associated with him.
One interesting plot could be a rogue ninja who discovers a hidden power within themselves that was suppressed all along. This new power makes them a target for both their former village and other rogue elements. Another plot might involve a rogue ninja forming an unlikely alliance with other outcasts to take on a greater evil that threatens the ninja world.
Kakashi could also be the main character in a different take on 'naruto rogue ninja fanfiction'. Imagine if for some reason, Kakashi was framed as a rogue ninja. He would have to use his intelligence and combat skills to clear his name while also dealing with the challenges of being an outcast. He might even discover some dark secrets about the Hidden Leaf Village in the process.
The Leaf Village authorities could be the main antagonists. Since Naruto is now considered a rogue, they would be the ones trying to hunt him down. They might see him as a threat to the village's stability and security.
One idea could be a rogue ninja who was once a close friend of Naruto but turned due to a misunderstanding. They could have unique powers and be on a mission to prove their own version of justice.
Well, if Naruto becomes a Mist Ninja, the whole power dynamic in the Naruto world would change. For one, the Mist Village has its own set of unique jutsus and training methods. Naruto would be exposed to different forms of combat and ninja skills. This could also lead to different alliances. Since Naruto is a central figure, his shift to the Mist Village might make Konoha view the Mist Village in a new light, either as a threat or as a potential closer ally. And his relationships with characters like Sasuke and Sakura would be greatly affected. He might end up having new rivalries within the Mist Village itself.