Jealousy could also play a big part. Sakura has her own complex feelings for Naruto, and when she sees Hinata being so openly affectionate towards him, she might feel jealous. Hinata, who has loved Naruto for so long, might feel jealous of Sakura's long - standing relationship with Naruto as his teammate.
One reason could be misunderstanding. Maybe Hinata sees Sakura getting too close to Naruto and misinterprets their friendship as something more. And Sakura, on the other hand, might not be fully aware of Hinata's feelings for Naruto and act in a way that Hinata perceives as a threat.
One reason could be their long - standing feelings for Naruto. They both care about him deeply, and in fanfiction, this can lead to intense rivalry. Sakura may feel that she has known Naruto longer and has a stronger claim. Hinata, on the other hand, has her own deep, unspoken love for Naruto that she might be more willing to fight for. Another reason could be their own insecurities. Sakura might be insecure about Hinata's gentle and kind nature that Naruto seems to like. Hinata could be insecure about Sakura's strength and her history with Naruto.
Well, in fanfictions about Hinata and Sakura fighting over Naruto, it can go in different directions. One way is that it could be a physical fight where they are both trying to prove who is more worthy of Naruto's love. Another is an emotional battle, like Sakura trying to win Naruto back from Hinata who has already won his heart. However, some fanfictions also resolve this conflict in a more friendly way, where they realize that Naruto's happiness is more important than their own rivalry and they end up becoming friends instead of rivals.
I think Sakura would win. She's shown time and time again that she can hold her own in a fight. She's trained with Tsunade and has some serious punch - power. Hinata is strong too, but Sakura has more of an aggressive fighting style that would probably overpower Hinata in a direct fight within the context of fanfiction.
In fanfiction, it might be because of personal growth differences. Naruto may grow in a different direction than Sakura or Hinata. Naruto could become more power - hungry in some interpretations, which goes against the values of Sakura or Hinata. Also, family issues could play a role. If there are problems with raising their children, like different parenting styles between Naruto and his partner, it could lead to a breakdown in their relationship and ultimately divorce.
Well, one reason could be Sasuke's continued obsession with his revenge. He might be so focused on it that he ignores Sakura's feelings and concerns, which could lead to a fight. For example, if Sakura tries to persuade him to let go of his revenge and he refuses, it could spark an argument.
One possible reason could be Hinata's unwavering loyalty. Throughout the series, Hinata has always been there for Naruto, believing in him even when others didn't. In contrast, Sakura was often more focused on Sasuke. So Naruto might see Hinata as someone who truly understands and supports him.
It could also be a way for some fans to explore alternative relationship dynamics. Maybe they were not fully satisfied with how the relationships in the original Naruto story developed. For example, they might have always thought there was some unspoken tension between Naruto and Sakura that could have led to something more, and this is their way of exploring that idea in a fictional and extreme way. However, this does not justify the unfaithful nature of the plot.
In the fanfiction, Sakura could be jealous because she has an ego. She might have thought that Naruto would always be there waiting for her. But when he falls for Hinata, it bruises her ego. Additionally, she may have seen Naruto as her safety net, someone who would always support her no matter what. Losing that special status to Hinata makes her envious and jealous.
It could also be because of Naruto's own insecurities. He might be afraid that Hinata's actions are drawing too much unwanted attention or putting herself in harm's way, and he yells to try and protect her in his own, brash way. He doesn't want to lose her, but doesn't know how to express it other than through yelling.
One possible reason could be that in the fanfic, Hinata has different personal goals or ambitions that she feels would be compromised if she were to be with Naruto. For example, she might be more focused on her family duties or her own ninja training and career, and she believes that a relationship with Naruto would distract her from those things.