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.
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.
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.
Well, in some fanfictions, the Shinigami might save Naruto by using its special powers to reverse a fatal curse or injury. For example, it could extract a harmful entity that was about to kill Naruto from his body.
Maybe the Shinigami uses its special powers to heal Naruto's severe injuries. For example, it could transfer some of its own spiritual energy to Naruto to revive his fading life force.
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.
It's a bit of a stretch to call Naruto a Shinigami fanfiction. Naruto has a deep - rooted Japanese cultural influence in terms of its ninja theme, which is quite different from the core concept of Shinigami. However, if we look at some aspects like the idea of a character having some form of power over life and death, there could be a very loose comparison. But overall, Naruto stands on its own as an independent and well - developed story that has been carefully crafted by its creator, not a derivative work based on Shinigami.
Another possibility is that there could be a rogue shinigami who doesn't like the fact that one of their kind is raising a human. This rogue shinigami could try to undermine Harry's growth and even try to harm him or the shinigami who is raising him.
The 'naruto is the shinigami fanfiction' might be about a new adventure for Naruto. Since Shinigami are often associated with death and the supernatural, it could mean Naruto gets involved in a situation where he has to interact with Shinigami - like beings. This could change his character development, as he has to deal with new moral and ethical dilemmas related to the power and nature of Shinigami. For example, if Naruto has to decide whether to use Shinigami - like powers for the greater good or not, it can lead to a very interesting story arc.