His relationship with Sasuke might be different. Sasuke could be more intrigued by Naruto's new look and the possible mystery behind the black hair. It could either create more tension or bring them closer as they try to figure out what's going on.
His friends might be initially shocked. Sakura could tease him about it at first but then grow to like the new look. Sasuke might be indifferent on the surface but secretly find it interesting. His enemies might underestimate him, thinking he's become more of a softie with the long hair, but then be surprised by his unchanged combat skills.
In terms of his relationship with the villagers, those who once bullied him for being an orphan and having a different look (with his blond hair) might be even more hostile if his red hair makes him stand out more. However, there could also be some villagers who see his red hair as a sign of something special and start to respect him more, which could lead to a shift in how Naruto views the village and his place in it.
His long hair might make Sakura see him in a different light. Maybe she starts to notice his more mature side with the long hair and becomes more attracted to him. It could also change his relationship with Sasuke. Sasuke might initially mock his new look but later come to respect the power that seems to be associated with Naruto's long hair.
Naruto's relationship with his enemies would surely be affected. Enemies might target him more if they think his red hair is a sign of a new power they can steal or a weakness they can exploit. On the other hand, some enemies might be more hesitant to attack him, fearing that the red hair is a sign of a new and unknown strength. His relationships within the ninja world in general would be in flux, as everyone tries to figure out what this red - haired Naruto means for the balance of power.
His relationship with Sakura might change. Sakura could be initially shocked by his new look and it might make her see him in a different light. Maybe she starts to notice him more as a person rather than just her friend. For example, she might become more curious about what happened to cause the change and in the process, grow closer to him.
His relationship with Sakura might change. She could be more intrigued by his new look and start to see him in a different light, not just as the annoying kid. With Sasuke, Sasuke might be more jealous as Naruto's blue hair makes him even more unique and gets more attention.
If Naruto were not human, his relationships would likely be very different. For example, his relationship with Sasuke might be more strained. Sasuke, who is very focused on power and revenge, might see Naruto as a greater threat if he's not human. He could view Naruto's non - human abilities as something to envy or fear. With Sakura, she might be more hesitant around Naruto. Instead of her initial crush, she could be more cautious, not knowing what Naruto is truly capable of.
With Sakura, she might be initially afraid of Naruto's demon form. But as she realizes that Naruto is still the same person inside, she could become more protective of him and help him control his powers. Their friendship could deepen in a different way compared to the original story.
His relationship with Sasuke would be really interesting. Since Sasuke has his own complex connection to the Uchiha clan and Madara, Naruto becoming a Madara fan could either bring them closer together in understanding the Uchiha's past or drive them further apart if Sasuke doesn't agree with Naruto's new - found admiration. Maybe Naruto would start to push Sasuke towards a more 'Madara - like' view of power and revenge.
His relationship with Sasuke would likely become more strained. Since Naruto is forced to be a ninja, Sasuke might see him as being part of the system that he resents. Naruto's friends like Sakura would also be worried about him. They might try to find a way to free Naruto from whatever is forcing him to be a ninja. His relationship with his teachers, like Kakashi, would also change. Kakashi might be conflicted between following the rules that are forcing Naruto and protecting Naruto from harm.