Sakura could also be a great main character. She could go to the Snow Village to study their unique medical techniques. The Snow Village has different herbs and healing methods due to its cold climate. Sakura could learn from their healers and in return, teach them some of the Hidden Leaf's medical knowledge. Along the way, she might also have to defend the village from a group of rogue ninjas.
It could be Naruto himself. He could be sent on a diplomatic mission to the Snow Village. There, he would face new challenges like the extreme cold and different fighting styles of the Snow Village ninjas. His positive attitude and never - give - up spirit could inspire the Snow Village ninjas and help him make new friends.
Another possibility could be Sakura. She could be adopted into the village, perhaps because of her medical skills. In the village, she could learn new ways to combine her medical ninjutsu with the Oni Ogre's knowledge of natural healing. Her strong - willed personality would help her assert herself in this new environment.
Another possible antagonist could be an ancient and powerful ninja clan that has been in hiding for centuries. They see Naruto's village as an encroachment on their territory or a disruption of their long - planned revival. They use their ancient and dark ninjutsu to try and stop the village from growing. They might also try to corrupt some of the villagers to turn them against Naruto and his ideals.
Well, it could be the children of the original Naruto characters. For example, Boruto could play a major role in the new village. He already has his own story in the Boruto series, but in a fanfiction, he could be involved in new adventures specific to the new village, like uncovering secrets about its founding or dealing with new threats.
The village elders could be the main antagonists. They might have their own agendas that conflict with Naruto's ideals, which could lead to him leaving. For instance, they may be more concerned with maintaining the village's power structure than the well - being of its individuals.
The Jinchuuriki's mentors or those who protect them could also be main characters. For instance, Kakashi could be a main character in a fanfiction where he is tasked with training a new Jinchuuriki. His experience and wisdom would play a crucial role in the Jinchuuriki's development, and his interactions with the other characters in the village would add depth to the story.
Sasuke could be a great main character. He has the power and the complex backstory. If he became the Kage of a different village, say the Mist Village, he could use his Sharingan and his combat skills to change the village's fate. He might try to end the long - standing blood feuds within the village using his own experiences of revenge and redemption.
It could be a new Uchiha character created specifically for the fanfic. This character could be an outcast Uchiha who has been living in hiding, observing the village's problems from afar. He decides to come back and use his unique Uchiha abilities, combined with a new perspective on life, to rule the village and bring about change. He would be an unknown force that disrupts the status quo.
It could be a rogue ninja from his own village who wants to use Naruto's unique position (being from a different village but having ties to the Leaf through his adventures) to start chaos. This ninja might be jealous of Naruto's popularity and abilities, so he tries to frame Naruto for various crimes to turn the different villages against him.
It could be the ninja from Naruto's former village who don't want him to succeed in his new place. They might see his new - found influence as a threat and try to undermine him.
It could be a rogue ninja who has mastered a forbidden jutsu and wants to destroy the village out of revenge. Naruto would then have to face this extremely powerful foe and in the end, sacrifice himself to stop the destruction.