Another aspect is that this doujutsu could change Naruto's connection with the spiritual world. Since it comes from kami, it might give him access to certain knowledge or powers that are related to the divine. This could make him more in tune with nature and the elements, allowing for more powerful and efficient use of his existing jutsu.
The doujutsu from kami might also grant Naruto new offensive capabilities. It could potentially allow him to use some sort of energy projection or manipulation that is unique to this doujutsu. For example, he could fire beams of spiritual energy that can disrupt an opponent's chakra system.
It could be a doujutsu that allows him to see the future in fragments. So he can get glimpses of his opponents' next moves or potential threats in the near future.
His relationship with the older generations like Kakashi and Tsunade could shift. They would see Naruto as a more mature and capable ninja. Naruto could use the insights from his doujutsu to contribute more to the decision - making in the village, and they would respect his opinions more.
His relationship with Sasuke could change significantly. With the new doujutsu, Naruto might be able to understand Sasuke's motives better or even be able to sense when Sasuke is in danger from afar, leading to more protective or empathetic interactions.
Well, having a doujutsu bloodline would be a huge game - changer for Naruto. His ninjutsu might be affected too. For example, he could combine his Rasengan with the unique vision of the doujutsu. Maybe he could use it to target the chakra points of his enemies more precisely, just like how Gentle Fist users do with their Byakugan - like vision. Also, his stealth and reconnaissance abilities would be much better, as he could see from a distance or in the dark with the doujutsu.
One possible plot could be that Naruto's new doujutsu gives him the ability to see the chakra flow in a more detailed way. This would enhance his combat skills as he could predict his opponents' moves better. He might also use it to understand the nature of different jutsus more clearly.
In the fanfiction, it could be that Naruto inherits the doujutsu. There might be a hidden lineage that Naruto is a part of, and when the time is right, the doujutsu awakens within him. This could be related to his Uzumaki heritage, which has many secrets yet to be fully explored. It's possible that some long - lost relative had this doujutsu and it has been passed down through the generations, finally emerging in Naruto.
The doujutsu can drive the plot by giving characters unique powers. For example, if a character has a powerful doujutsu, it can make them a target for other characters who want to either steal the power or use it for their own purposes.
Another might be the Byakugan. It gives a wide - range view and can see the chakra points in the body. In fanfiction, new and unique abilities of these doujutsu can be explored. For example, the author might create a situation where the Sharingan can not only copy physical techniques but also mental jutsus.
One possible doujutsu could be a time - manipulating doujutsu. It allows the user to slow down or speed up time in a small area, giving them an edge in battles. Another could be a soul - reading doujutsu, which enables the user to see the true intentions and past experiences of others by looking into their souls.
He would become more confident. Having a new and powerful ability would boost his self - assurance. He might be more willing to take on tougher opponents and challenges.