In this kind of fanfiction, Naruto might grow up with a better understanding of his Jinchuriki status from the start. He could be trained in a more specialized way. For example, he might learn unique jutsu related to the Nine - Tails' power earlier. Also, he could have more comrades who are also Jinchurikis, and they could form a strong bond, sharing their experiences and difficulties. This could lead to a Naruto who is more confident and in control of his power compared to the original story.
If Naruto was raised in a Jinchuriki Sanctuary in fanfiction, his relationships would undergo a significant transformation. First of all, he would have a group of peers who are also Jinchurikis. This would create a sense of camaraderie that is based on a mutual understanding of the unique challenges they face. His relationships would not be marred by the fear and prejudice that he faced in Konoha. Instead, they would be built on mutual respect and the common goal of mastering their Jinchuriki powers. He might form closer bonds with some Jinchurikis who could become like family to him. And in terms of romantic relationships, he could potentially find a partner who not only accepts him but also shares his powerful and complex identity as a Jinchuriki.
Gaara is a very likely recipient. He was a Jinchuriki like Naruto and they have a strong bond. Naruto might send him letters to check up on him and continue their friendship.
In a 'Naruto raised by Shinigami' fanfiction, the story could go in many directions. The Shinigami might train Naruto in secret, away from the prying eyes of the Hidden Leaf. Naruto could be taught how to use reaper - like powers, like being able to sever spiritual bonds. This would give him an edge in battles against enemies who rely on normal ninjutsu. Also, his relationship with the Nine - Tails might be affected as the Shinigami has its own connection to powerful entities.
One possible plot could be that Naruto grows up with Hanzo's strict and combat - focused training. He might learn unique jutsu and combat strategies from Hanzo early on. This could make Naruto a more battle - hardened ninja at a young age, with a different outlook on the ninja world compared to his canon self.
In this fanfiction, the story might start with Naruto being found or taken in by the Shinigami. The Shinigami could train Naruto in a different way than the regular ninja training. Naruto could learn secrets about the afterlife which could give him an edge in battles. He may also have a strange connection with the souls, which could be both a strength and a burden. For example, he might be able to communicate with the souls of fallen ninjas and gain their knowledge or power.
In this kind of fanfiction, Naruto might grow up with unique abilities and perspectives. Maybe he'd have an instant connection with the bijuu's power and be more in tune with nature. He could also face less discrimination as the bijuu might protect him from the start, leading to a very different Naruto compared to the original story.
One possibility is that Naruto would grow up with a different set of skills. Mei is skilled in water-based jutsu, so Naruto might be more proficient in water techniques rather than wind ones. He could also have a different view on politics and village relations as Mei is from Kirigakure, a village with a complex history.
One possible plot could be that Shisui, with his skills and kind heart, trains Naruto in unique ways. He might teach Naruto advanced stealth techniques early on. Naruto could also inherit Shisui's sense of justice and loyalty, which would shape his character differently from the original series. Shisui could also introduce Naruto to different aspects of Uchiha culture, which would give Naruto an edge in understanding his friends like Sasuke better.
Well, one possibility is that Naruto would grow up with a different view of the ninja world. Nagato's experiences with pain and his radical ideas might influence Naruto. He could be more cynical about the shinobi system at first. But Naruto's own kind heart might also start to change Nagato's views over time, leading to a very different Akatsuki perhaps.
Well, in such a fanfiction, Naruto might grow up with a very different set of skills. Manda is a large snake, so Naruto could learn more about stealth and survival in the wild. Maybe he'd be more in tune with nature. He could also develop unique fighting styles inspired by Manda's movements, like quick strikes and coiling maneuvers.