I'm not sure specifically as there could be many different interpretations in fanfiction. It might be about Naruto having some sort of special connection to kami (gods) and shinigami (god of death) in a made - up scenario, perhaps involving him being related to them in an unexpected way.
Obviously Naruto would be one of the main characters since the title implies his role. And then, there might be characters representing kami and shinigami. There could also be Naruto's friends like Sasuke, Sakura, etc. who would be involved in the story and react to Naruto's new status.
I'm not entirely sure as it depends on the specific fanfiction. But generally, it might involve Naruto having some sort of divine or shinigami - related origin, which could lead to him having special powers or a different path in his ninja journey.
In a Naruto and female Kami Yami Shinigami fanfiction, their relationship might start off as one of suspicion. Naruto, being the curious and brave character he is, would likely try to figure out who she is and what her intentions are. The Shinigami could be from a different dimension and her presence in Naruto's world could disrupt the existing balance. Naruto would then have to find a way to either send her back or make her fit into his world's order.
One idea could be a story where Naruto meets the female Kami by chance during one of his adventures. The female Kami is intrigued by Naruto's unique energy and decides to help him on his journey. Meanwhile, Yami, a mysterious and powerful being, senses the presence of both Naruto and the Kami and decides to interfere. The Shinigami, keeper of souls, also has an interest in Naruto's soul due to his many near - death experiences. They all get entangled in a complex plot where Naruto has to find a balance between the powers and intentions of these different entities.
A fanfiction could center around a powerful curse that is related to Kami Yami and Shinigami. Naruto gets caught up in it and has to use his ninja skills and his own strong will to break the curse. Along the way, he uncovers secrets about the connection between the three entities that no one knew before.
Obviously, Naruto would be one of the main characters since it's about him being the son of kami and shinigami. There might also be other characters from the original Naruto series like Sasuke, Sakura, and Kakashi who could be involved in his new story.
Naruto could interact through battles. For example, if Shinigami or Kami Yami's forces pose a threat to the Hidden Leaf Village, Naruto would fight against them. But then, he might realize that there's more to their actions than meets the eye and start to communicate to understand their motives.
There could be a power - sharing aspect. The female Kami Yami Shinigami might share some of her unique powers with Naruto. This could give Naruto abilities like the power to traverse between different planes of existence or the ability to see and communicate with spirits more clearly.
A possible exploration of character relationships could be that Kami and Yami are in an eternal struggle for balance, and Naruto gets caught in the middle. He has to work with both of them to keep the world in harmony, while also dealing with the Shinigami's influence. The Shinigami could see Naruto as a key figure in either maintaining or disrupting the order it oversees. Naruto would have to navigate his relationships with these entities carefully, as any misstep could have dire consequences for the world.