His relationship with Jiraiya could also change. Jiraiya would be extremely concerned. He would try to find a way to reverse whatever Orochimaru has done to Naruto. This could lead to Jiraiya being more strict with Naruto in his training, trying to strengthen Naruto's will to resist Orochimaru's influence. Naruto might feel pressured by Jiraiya's new intensity.
With his friends in Konoha, they would be worried and perhaps a bit afraid. They know Orochimaru's reputation as a villain. Naruto's friends like Shikamaru might start to keep a closer eye on him, which Naruto could resent. He would feel like they don't trust him anymore, and this could strain their friendships.
Well, his friends would likely be very confused and hurt. They know Naruto as a determined and kind - hearted person. If he's brainwashed, they might initially try to reach out to him, thinking it's just a temporary state. But as time goes on, they could become distrustful if he starts to act against them. Sasuke, for example, might be even more conflicted, seeing Naruto in such a different state. And Sakura would be heartbroken, as Naruto has always been a source of hope and friendship for her.
His relationship with his sensei, like Kakashi, could become more complex. Kakashi would feel guilty for not being able to protect Naruto from the experiments. And Naruto might start to question Kakashi's ability to keep him safe. This could lead to a strain in their relationship at first, but later they could grow closer as Kakashi helps Naruto recover from the trauma of the experiments.
It could improve his relationship with Sasuke. Since Chidori was Sasuke's signature move for a long time, Naruto learning it might show Sasuke that Naruto respects his skills and is willing to incorporate them into his own fighting style. This could lead to a more positive and equal relationship between them. Also, Kakashi might see Naruto in a new light. He trained Sasuke in Chidori, and seeing Naruto master it too could make him realize Naruto's determination and growth even more.
It would likely strain his relationship with Sasuke. Sasuke has his own complex history with Orochimaru, and if Naruto becomes a fan, Sasuke would be very confused and probably angry. He might see Naruto as betraying their shared values. As for his friends in Konoha, they would also be worried and try to talk Naruto out of it, which could lead to some arguments and a rift in their friendships.
If Naruto has a physical disability like a broken arm that doesn't heal properly in fanfiction, his friends like Sasuke and Sakura would need to step in and help him more. Sasuke might be more protective, which could change their dynamic from a competitive one to a more collaborative one. Sakura could use her medical skills to try and find a way to heal him, which would bring them closer. His relationship with his teachers, like Kakashi, would also change as they'd have to adjust their training methods.
Well, it might make his relationships more complex. His friends could be both curious and a bit wary at first. For example, Sasuke might see him as even more of an oddity, which could either drive them further apart or make Sasuke more protective in a strange way. Sakura might be more motherly towards him, trying to take care of him because of his new features.
It could have a mixed impact. Some characters may be intimidated. Naruto's usual friendly and boisterous nature is replaced with Zabuza - like traits. Those who were close to him, like Iruka, would be worried. They would try to reach out to him to understand why he has changed. His relationships with the villagers could also take a hit. Since Zabuza was an outsider and a bit of a threat in their eyes, Naruto acting like him might make the villagers less trusting. However, some of the more battle - hungry ninjas in the village might see him as a stronger and more interesting ally now.
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.
Enemies would definitely be more cautious around Naruto. Those who once underestimated him would now fear his golden chakra. This could lead to some enemies trying to find weaknesses in it. Meanwhile, Naruto's new power might also attract the attention of mysterious characters who want to guide him in using it, which could cause some friction with his existing relationships as he has to decide who to trust.
His friends would be extremely worried. Sakura, for instance, would likely try to use her medical skills to help him and also try to figure out why he's doing it. She might be angry at first for him harming himself but then become very concerned. His relationship with Sasuke could also change. Sasuke might see Naruto's self - harm as a sign of weakness or, on the other hand, it could make him more empathetic towards Naruto as he has his own inner demons.