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.
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.
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.
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.
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.
One reason could be Naruto's power. In the Naruto universe, Naruto has great power, and both Itachi and Sasuke might see Naruto as a key to achieving certain goals. Itachi might want to protect Naruto because he sees Naruto as a force for good in the future of the ninja world. Sasuke, on the other hand, may view Naruto as a rival in terms of power and influence, and in fanfiction, this could lead to a fight between them over Naruto.
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.
One reason could be that both Ash and Gary have only just realized their feelings for Misty at the party. They might have been suppressing their emotions before. Ash could see Misty in a new light, perhaps because of how she looks or behaves at the party. Gary, too, might suddenly feel a strong attraction and not want to lose her to Ash.
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.