The Hidden Mist Jutsu could give Naruto a new strategic advantage. He could use it to cover his movements during battles. Since Naruto is often in the spotlight during fights, this jutsu would let him operate in the shadows for a change. He might be able to develop new combinations with his existing jutsus. For instance, he could use Rasengan while hidden in the mist. This would make it harder for opponents to predict his attacks and defend against them.
He might learn a time - traveling jutsu. This would be really cool as it could allow him to go back and change certain events in the Naruto world, or gain knowledge from the past to use in the present battles.
With his friends like Sasuke, Naruto's new ability might cause some jealousy at first. Sasuke is always striving to be stronger, and seeing Naruto master such a powerful jutsu could make him feel a bit left behind. But in the long run, it could also motivate Sasuke to improve himself further and their rivalry could become even more intense.
In a fanfic where Naruto learns medical jutsu, it could greatly impact the story. Firstly, it would make him more versatile in battles. He could heal his comrades on the spot, increasing their chances of survival. This would also change his relationships. For example, he might become closer to Sakura as they now share a common area of expertise. Moreover, it could lead to new plotlines. He might be sent on special medical missions or be able to develop unique jutsu combinations that incorporate his medical skills.
Well, in many such fanfictions, Naruto might start learning his father's jutsu when he discovers some hidden scrolls or when a mentor who knew his father decides to teach him. Maybe it could be someone like Jiraiya who reveals some secrets about his father's techniques.
One challenge could be mastering the chakra control required. The Hidden Mist Jutsu demands a precise amount of chakra to create a thick and effective mist. Naruto has had issues with chakra control in the past, so this would be a hurdle. Another challenge might be adapting his fighting style. He's used to more straightforward and aggressive attacks, and the stealthy nature of the Hidden Mist Jutsu would require a different approach.
Well, Naruto learning Uzumaki clan jutsu in the fanfiction could lead to some interesting character developments. He might discover more about his heritage and how the Uzumaki clan's jutsu are related to his own abilities. This could also change his relationships with other characters, like how they view him now that he has these new skills.
It could enhance his ability to customize his ninja tools. For example, he might be able to make kunai that are sharper and more durable, giving him an edge in combat. Also, if he can smith special tools that can better channel his chakra, like a new type of shuriken, his ranged attacks could become more powerful.
One challenge could be the complexity of the jutsu itself. His father's jutsu might be very advanced and require a high level of chakra control that Naruto doesn't initially have.
His relationship with Sasuke could change significantly. Sasuke might see Naruto's newfound ability as a threat or, on the other hand, it could be a motivation for him to get stronger. Naruto might use the Hiraishin no Jutsu to try and keep an eye on Sasuke, which could either annoy Sasuke or make him secretly respect Naruto's determination.
If he learned a healing jutsu, he would become more nurturing. He could use this jutsu not only to heal his friends in battle but also to help the villagers. His reputation would change from just a powerful fighter to also a healer, and he would be more respected in a different way.