Well, it could strengthen their bond. Naruto being hurt might make Hinata more protective and caring towards him. This could lead to Naruto realizing Hinata's true feelings for him more deeply, and in turn, he might start to see her in a new light, growing closer to her.
In such a fanfiction, Naruto's injury could be a turning point. Hinata, seeing Naruto hurt, might become more assertive in expressing her feelings. This could make Naruto, who is in a vulnerable state, more receptive to her. Their relationship could then develop faster as he leans on her for support during his recovery.
At first, it could create a rift. Naruto might be confused and hurt not just physically but also emotionally. He may question Sakura's true feelings towards him. Sakura, on the other hand, would probably feel guilty, which could lead to her avoiding Naruto, further straining their relationship.
It could be due to Sakura's feelings for Sasuke. If she's overly focused on Sasuke and Naruto gets in the way of her plans regarding Sasuke in some way, she might lash out and hurt Naruto without really meaning to cause serious harm.
It can strengthen the NaruHina relationship. Since Naruto hates Sakura and Sasuke, he might turn more towards Hinata for emotional support. Hinata's presence becomes even more important to him. He realizes that Hinata is the one who truly cares about him, not like Sakura who is preoccupied with Sasuke.
In a hurt comfort fic, perhaps Sakura has an emotional breakdown after a failed mission. Naruto finds her crying alone. He sits beside her and just listens as she pours out her frustrations. Naruto then shares his own insecurities, like how he sometimes doubts if he can really become Hokage. This mutual sharing of pain and comfort brings them closer, strengthening their friendship in a way that goes beyond their ninja duties.
It can strain their relationship. Naruto's jealousy might make Sakura feel suffocated. For example, if he's constantly interrupting her time with others. But it could also make Sakura realize Naruto's deep feelings for her. If she understands his jealousy is coming from a place of love, it could bring them closer.
If Naruto gets hurt by Sakura, their relationship could become strained. Naruto might be confused and hurt, both physically and emotionally. He might start to avoid Sakura at first.
Well, in Naruhina fanfiction, the idea of Naruto hating Sakura can be a device used by writers. It could be due to jealousy in the context of the story, like if Sakura is shown as being too close to someone Naruto doesn't like. Or it could be a misinterpretation on Naruto's part of Sakura's actions. But this is all part of the fictional world of fanfiction, and not a given in the overall Naruto universe.
One reason could be for the sake of the Naruhina relationship. To make Hinata seem like a better match for Naruto, the writer might make Naruto hate Sakura. For example, if Sakura is written as being too pushy or bossy in the fanfiction, Naruto could start to dislike her.
It might create a rift between them. If Naruto feels that Sakura is always nagging and yelling, he could start to avoid her. In some fanfictions, this could lead to a period of estrangement where they don't work well together as a team. For example, Naruto might choose to go on solo missions instead.
It might also create a rift within their group. If their friends witness Naruto yelling at Sakura, it could cause tension among the whole group. Some might side with Naruto, thinking Sakura deserved it, while others might defend Sakura, leading to a divided group dynamic in the fanfiction.