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.
The plot could also focus on how Naruto's relationships change. Since he's raised by the Shinigami, he might be an outcast among the normal ninja. His friends might be wary of him at first. However, his new powers and abilities could also attract some who want to use him for their own purposes. Naruto would have to struggle not only with his new identity but also with those who would try to manipulate him because of it.
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.
Naruto would probably be more independent in his thinking. Instead of relying on the typical ninja values taught in the village, he'd draw from the Shinigami's teachings. This could make him a bit of a rebel in the eyes of the ninja community. He might question the established norms more often. His development would also be influenced by any special tasks or missions the Shinigami gives him. For instance, if he has to deal with restless souls, it would make him more empathetic towards those in pain, but also more determined to maintain the order between the living and the dead.
The plot might revolve around Harry having to keep his relationship with the shinigami a secret from the wizarding world. As he grows up, he starts to notice how his upbringing by a shinigami gives him an edge in dealing with dark magic. He could use the knowledge of the shinigami to face Voldemort in a way that no one else could, like understanding the true nature of death and using it to his advantage.
He'd probably be more solemn. The Shinigami is a being associated with death, so Naruto would be exposed to serious concepts early on.
I'm not sure specifically as there could be many different plots in such a fanfiction. Generally, it might involve the Naruto character who is a Jinchuuriki (a host of a tailed beast) having some sort of connection or interaction with the Shinigami (the god of death in some contexts). It could be about how his Jinchuuriki powers are affected by this connection, or perhaps adventures that come from it.
Well, in this 'naruto champion of the shinigami fanfiction', it could be that Naruto is chosen by the Shinigami for a special mission. The Shinigami might see something unique in Naruto, like his strong will or his ability to never give up. So, Naruto is made the champion. As the champion, he could be tasked with maintaining the balance between the living and the dead in the Naruto world. This would likely involve battles against those who try to disrupt this balance, such as evil spirits or necromancers. He may also have to face his own inner demons and learn how to control the power of the Shinigami without being consumed by it.
The plot might involve Naruto being sent to the Shinigami realm for some reason. There, he has to adapt to the rules and powers of the Shinigami. He could make allies among the Shinigami and bring back some of their knowledge and powers to his own world, causing a stir among the ninja clans. He might also face challenges from Shinigami who don't trust him at first because he's an outsider.
Well, if Naruto was raised by Whis, he'd likely be exposed to a whole new world of power levels. Whis could introduce Naruto to the concept of godly ki. Naruto's ninjutsu might be enhanced or even combined with ki - based attacks. Also, Whis's sense of discipline would surely have an impact on Naruto's growth, both as a fighter and as a person. Maybe Naruto would become more refined in his fighting style, rather than relying solely on brute force like he sometimes does in the original story.
Well, for a 'naruto raised by samurai' fanfiction, the story could start with Naruto being found by a group of samurai. They would raise him as one of their own. Naruto would grow up learning the ways of the samurai, like how to handle a katana and the importance of loyalty. This would lead to interesting interactions when he meets shinobi later. He might have a different view on the ninja world, perhaps seeing some of the shinobi ways as unethical compared to the samurai code.
Well, one possibility is that Naruto would grow up with dragon - like powers. He might be able to breathe fire or have super strength. And his view of the ninja world would be very different, as he was raised in a dragon's lair rather than the Hidden Leaf Village.