Maybe it's a completely new and unknown kami. A kami created specifically for this fanfiction. This kami could have unique powers and a different view of the ninja world compared to the existing characters in Naruto. It would add a fresh and exciting element to the story.
Maybe it's an existing character from Naruto who has been elevated to Kami status. For example, Tsunade could be turned into a Kami, and Naruto's relationship with her could be a very different dynamic from their previous ninja - leader relationship. Or it could be Kaguya, who was already a very powerful being, and in this fanfiction, she reforms and becomes a Kami and Naruto's wife.
In fanfiction, the 'kami' could be an original deity created by the author. This new 'kami' could have its own motives and reasons for giving a gift to Naruto. Maybe it's a kami that has been observing Naruto's journey and decides to interfere to help him achieve a greater purpose. It could be a kami associated with nature, like a kami of the wind or the fire, and the gift could be related to that element.
Perhaps it could be a female version of an existing kami from Naruto lore. For instance, a female counterpart of the Sage of Six Paths. She would have vast knowledge and power, and her training of Naruto would be a way to pass on that ancient wisdom and strength.
Maybe Jiraiya. Since Jiraiya was Naruto's mentor and taught him a lot of things. He might have some knowledge about summoning kami and pass it on to Naruto.
The main character is Seina Yamada. He's the one who drives the story forward with his adventures. There are also other characters like Amane Kaunaq who has a relationship with Seina. And there are various alien characters that play important roles in the story as well.
The main character is Tenchi. And there are female characters like Ryoko, Ayeka, and Sasami. Ryoko is a space pirate, Ayeka is a princess, and Sasami is Ayeka's younger sister.
Since there are countless fanfiction works, especially in the Naruto fandom, it's very difficult to say who the author of 'kami saves naruto fanfiction' might be. It could be an amateur writer who just wanted to explore this unique idea of a kami saving Naruto, or it could be someone more experienced in writing fanfiction, but without further research, we can't be sure.
Ino could be a potential member. Since she has a strong connection with mind - related abilities, she might be intrigued by Naruto's new connection with fem Kami and get involved in the harem. Also, Sakura might be part of it. Despite her initial feelings for Sasuke, she could see Naruto in a new light after his encounters with fem Kami and join the group.