Maybe a group of rogue ninjas who initially see Naruto as a target but then end up joining forces with him. They have different skills and personalities that add to the story.
A young girl who has also been shunned by society could be introduced. She and Naruto bond over their shared experiences of being outcasts, and she becomes an important part of his journey to prove himself after being banished from Konoha.
There could be a hermit who takes Naruto in during his banishment. This hermit could teach him some ancient ninja techniques. Another new character might be a fellow outcast that Naruto meets, and they form a bond while living on the fringes of society.
Sasuke is often a common character. He might have a different reaction to Naruto's banishment compared to the original story. Maybe he decides to join Naruto outside of Konoha or tries to find a way to get him back. Kakashi could also be there. He might be conflicted about Naruto's banishment and could play a role in either helping Naruto secretly or trying to uphold Konoha's decision.
Perhaps Danzo could be the main antagonist. He was always a bit of a shadowy figure in the original Naruto series. In this fanfic, he might see Naruto and Sasuke as a threat to his own control over Konoha. So, he uses his influence to have them banished. He could be secretly working with external forces to further his own agenda while keeping Naruto and Sasuke away from Konoha.
One possible plot could be that Naruto and Sasuke are wrongly accused of a serious crime against Konoha. For example, they might be framed for conspiring with an enemy village. As a result, they are banished. Naruto, with his unwavering spirit, might start thinking about how to prove their innocence from outside the village. Sasuke, on the other hand, could initially be more bitter and focused on getting revenge on those who framed them. Together, they embark on a journey to find the real culprits while also facing various challenges outside Konoha, such as dealing with other ninja clans who see them as outcasts and potential threats.
Maybe a group of outcasts similar to Naruto. They could form a team with Naruto and they all have their own unique abilities. For instance, one might be able to control the elements in a very different way than the normal shinobi in Konoha. They work together to survive in the banished land.
Obviously Naruto is one of the main characters. He is the center of the story as he is the one exiled from Konoha.
Well, the plot could involve Naruto being wrongly accused of something major, leading to his banishment. With his newfound ability of Wood Release, perhaps he teams up with some outcasts. He might use the Wood Release to create a new home for himself and his new allies, and then seek to prove his innocence to Konoha while also protecting his new place from any threats.
Perhaps Naruto discovers a long - hidden secret about Konoha that led to his banishment. This could involve some dark deeds in the village's past that certain individuals were trying to cover up by getting rid of Naruto. He then uses this knowledge to his advantage in some way.
Sasuke would likely be involved. He has his own issues with Konoha and might side with Naruto, either out of friendship or his own vendetta against the village. Also, the elders of Konoha like Danzo could be important characters as they might be the ones behind Naruto's banishment.
There could be air - based ninja clans with their own unique abilities. For instance, a clan that can manipulate air pressure to create powerful blasts or shields. These new characters would bring fresh fighting styles to the Naruto world.