Rock Lee could be an ally. His determination and hard - working nature would be very useful in the rebuilding process. He could help with the physical labor of building structures. Also, some of the Uzumaki clan members who were scattered around different villages after Uzushiogakure was destroyed might come together and ally with Naruto to restore their ancestral home.
Obviously, Naruto would be one of the main characters. He's the driving force behind the rebuilding of Uzushiogakure. Hinata might also be involved, as she is Naruto's wife and could offer her support, perhaps in terms of taking care of the villagers' needs. Another character could be Kakashi. His experience and wisdom would be valuable in guiding Naruto through the process, especially when it comes to handling political aspects or dealing with potential threats.
He faces many challenges like dealing with hostile forces trying to stop him and finding resources to build the village.
Naruto is the obvious one. His connection to the Uzumaki clan makes him the driving force behind the rebuilding. Hinata would also be likely involved, as Naruto's wife, she would support him and might contribute to the new Uzushiogakure in areas like family support and community building.
In this fanfiction, a major plot point is likely Naruto facing opposition. Some might not believe Uzushiogakure should be rebuilt, either due to past grudges or political reasons. Also, Naruto would need to find a way to preserve the history and culture of Uzushiogakure during the rebuilding process. This could involve searching for ancient texts or artifacts related to the village. He may also encounter challenges in training new shinobi in the ways of Uzushiogakure, as the techniques might have been lost over time.
Sasuke could be a likely ally. Despite their past differences, Sasuke might see the injustice in Naruto and Shikamaru's banishment and decide to help them. He has his own reasons to oppose the village's wrongdoings at times.
It could center around Naruto facing challenges during the rebuilding process. There could be political opposition from other villages who fear a strong Uzushiogakure again. Naruto would then have to prove that the rebuilt village is a force for good in the ninja world, perhaps by forging new alliances and treaties.
The main antagonists could be some of the conservative elders in the Hidden Leaf Village. They banished Naruto in the first place and would see his rebuilding of the Uzumaki clan as a threat to their power. They might try to undermine his efforts by spreading false rumors about him and his new clan.
If Naruto is banished to the My Hero Academia universe, Deku could be his ally. Deku, with his determination to be a hero, would understand Naruto's drive to be recognized. They could share their experiences of being underestimated at first. Also, in a crossover with the Inuyasha world, Kagome could be an ally. She has a kind heart and could help Naruto understand the new world he's in. Her spiritual powers might also interact in an interesting way with Naruto's chakra.
Sasuke could be an ally. Despite their past differences, Sasuke might see the injustice of Naruto's banishment and decide to join him. He could bring his powerful Sharingan skills to the new village. Also, some of Naruto's old friends like Shikamaru or Choji might secretly support him and provide resources or information. They could be like undercover allies still within the old village but helping Naruto's new village in various ways.
Naruto, after being banished, could focus on rebuilding Uzumaki in a more spiritual sense at first. He'd research and revive the old Uzumaki traditions, such as their unique festivals and religious beliefs. This would attract people who feel a connection to the Uzumaki name. Then, he'd gradually build a physical settlement. He might even make alliances with other small ninja clans that were once friendly with the Uzumaki. As his new Uzumaki community grows, it becomes a place of refuge for those who are discriminated against in other villages, and Naruto's leadership makes it a force to be reckoned with in the ninja world.