Well, initially Sasuke might be extremely shocked and even a bit angry. He might see it as Naruto encroaching on his family's legacy. However, as time goes on, Naruto could use the Sharingan to show Sasuke that he understands the pain of the Uchiha. For example, by using the Sharingan's memory - viewing abilities to show Sasuke that he truly grasps the tragedies that the Uchiha clan endured. This could lead to a more empathetic and ultimately stronger bond between them.
His relationship with Sasuke would become more complex. Sasuke, who has always been proud of his Uchiha heritage and the Sharingan, might feel a mix of envy and pride that Naruto now has a part of what makes the Uchiha special. Naruto, on the other hand, would try to use the Sharingan to understand Sasuke better, perhaps seeing the world more from Sasuke's perspective.
The relationship would be deeply transformed. Naruto getting Sasuke's Sharingan means he now has a connection to Sasuke's clan and heritage. This could make Sasuke see Naruto in a new light, not just as a friend but as someone who can carry on a part of the Uchiha legacy. For Naruto, he would feel a greater responsibility towards Sasuke and the Uchiha name. They would have to work together more closely to figure out how to handle this new situation, and it could bring them closer than ever, with a new level of mutual understanding and respect.
Naruto's relationship with his friends in the Hidden Leaf Village would also change. Some might be in awe of his new power, while others might be a bit afraid. For example, Sakura might be worried that the Mangekyou Sharingan could change Naruto's personality. Naruto would have to reassure them that he's still the same person. And he might also use his new power to protect them more effectively, strengthening their bond.
As for his relationship with the rest of the village, some might be suspicious at first. The Sharingan has been associated with the Uchiha clan, which has had some dark moments. But as Naruto shows that he can use the power for good, they would gradually accept it. However, there would always be some who are wary, which could create some interesting social dynamics in the village.
In a fanfiction where Naruto kills Sasuke and obtains the Sharingan, it would be a game - changer for the story. Naruto would gain new abilities like enhanced visual perception and the potential to use some of the Uchiha's signature jutsu. However, this would also create a lot of internal conflict within Naruto. His ninja way has always been about saving his friends, not killing them. So, this act would make him question his own identity and values. Moreover, the political situation in the ninja world would be in chaos. The Uchiha clan's power being transferred to Naruto, an outsider in terms of the Uchiha, would be a controversial matter that could spark new rivalries and alliances.
It would likely become more complicated. Sasuke has his own history with Orochimaru. If Naruto goes to Orochimaru for power, Sasuke might see Naruto as a rival in a different way. He could be jealous that Naruto is getting power from Orochimaru, or he could be angry that Naruto is making the same 'bad' choice he once did.
Well, Naruto's fighting style would change in multiple ways. Firstly, he would gain access to the six paths techniques that the Rinnegan allows. This means he could use things like the Deva Path's gravity manipulation in combat. Secondly, his speed and reaction time would be enhanced due to the Rinnegan's perception abilities. And finally, he might start to use more genjutsu - like tactics, since the Rinnegan has certain genjutsu - related powers. All in all, his fighting would become a more well - rounded and dangerous style.
His relationship with Sasuke would be very different. Sasuke might be both jealous and intrigued that Naruto now has an Uchiha power. They could become more equal in terms of power, which might lead to a more competitive but also more collaborative friendship. Naruto could also use the Sharingan to understand Sasuke's pain better, seeing the memories of the Uchiha massacre through Sasuke's eyes.
Well, if Naruto gets Shisui's Sharingan in the fanfiction, it could greatly enhance his perception skills. He'd be able to see chakra flow more clearly, which would help him in combat. He might also be able to use some of the Sharingan - specific jutsus like the Genjutsu techniques related to it. This would make him even more formidable against opponents, especially those who rely on stealth or illusions.
Their relationship would likely become more complex. They might start to protect each other more fiercely. For example, Sasuke might not leave the village in the first place because he now has a closer family tie to Naruto. Naruto would also be more insistent on getting Sasuke to stay and see him as an important part of his family.
His combat abilities would be enhanced significantly. With the Sharingan, he could copy jutsus more easily and predict enemy movements better. The Byakugan would give him near - 360 - degree vision and the ability to see the chakra points. This combination would make him a formidable opponent in battles, allowing him to strategize and counter - attack more effectively.