With Sasuke, it could either drive a wedge or bring them closer. If Sasuke blames himself for Naruto getting injured while protecting him, he might distance himself out of guilt. On the other hand, it could also make Sasuke realize how much Naruto means to him and he could become more committed to their friendship.
His friends in Team 7 and the village in general would rally around him. They would be worried and do everything they can to help him get better. This would strengthen the sense of community and friendship in the fanfiction. For example, Shikamaru might use his intelligence to figure out a way to heal Naruto faster, and Ino could use her mind - transfer jutsu to communicate with Naruto while he's unconscious to keep his spirits up.
His relationship with his rivals might change. Some might show a bit of sympathy, which is unexpected considering the competitive nature of Quidditch. This could lead to a more complex dynamic where they're not just enemies on the pitch but have a newfound respect for each other outside of the game due to Draco's injury.
His relationship with Hinata could become stronger. Seeing him injured might make her more determined to be by his side and protect him, leading to a deeper emotional connection. With Sasuke, it could be a turning point. If Sasuke hears about Naruto's injury, it might make him re - evaluate his feelings towards Naruto, perhaps feeling a sense of protectiveness or at least a new respect for his rival.
His apathy can strain his relationships. His friends might feel neglected. For instance, Sakura could be confused and hurt as Naruto no longer shows the same eagerness to be part of the team.
It might strengthen their relationship. Hinata could be more worried about Naruto and be more open about her feelings. She might take care of him during his recovery, which would bring them closer.
His illiteracy might make his friends initially frustrated. For instance, Sasuke, who is more studious, could be impatient with Naruto's inability to read important messages. But as they grow, they might become more understanding.
It could make some relationships stronger. His friends might be in awe of his new powers and look up to him even more. But it could also create some distance, as his new status might make others feel inferior.
It can create misunderstandings. For instance, his friends might think he doesn't like them if he recoils from their touches. His romantic relationships could also be affected. If he's in love with someone in the fanfiction, his fear of touch would make it difficult for him to show physical affection, which is an important part of a romantic relationship.
His friends might start to avoid him. If Naruto is constantly snapping at them, they'll feel hurt and not want to be around him as much.
The Uzumaki bloodline can also affect his relationships with characters from other villages. In fanfiction, ninja from other villages who know about the Uzumaki's power might either fear or respect Naruto more. This could lead to different diplomatic situations. For example, a village might be more willing to negotiate with the Hidden Leaf because of Naruto's Uzumaki bloodline. On the personal level, he might meet other Uzumaki descendants in other villages, and they could form a strong bond based on their shared bloodline.
His depression could strain his relationships with his friends. They might not understand why he has become so withdrawn and moody. For instance, Sakura might try to reach out to him, but Naruto could push her away, causing a rift in their friendship.