Well, perhaps she hates the Cullens in the fanfiction because she blames them for changing her life so drastically. In the 'Twilight' world, her relationship with Edward and the Cullens completely upends her normal life. If she resents losing her old life, her friends, and her future as a normal human, she might direct that anger towards them. Also, it could be that she has a bad encounter with one of the other Cullens aside from Edward that makes her generalize that dislike to the whole family.
One possible reason could be that she discovers some dark secrets about the Cullens. Maybe she finds out they have been lying to her about their true nature in a more malicious way than in the original story. Another reason might be that she feels threatened by their vampire powers. If they accidentally or purposefully use their powers around her in a menacing way, it could make her feel scared and turn that fear into hatred.
In this fanfiction, Bella could hate the Cullens due to a misunderstanding. For example, if she misinterprets their actions as controlling or manipulative. They might be trying to protect her in their own way, but she sees it as them trying to limit her freedom. Also, jealousy could play a part. If she sees the close bond among the Cullens and feels left out, it could fester into hatred. Additionally, if there are other supernatural elements in the fanfiction that the Cullens are involved with in a way that she disapproves of, like some kind of vampire politics that endangers her or those she loves, it could lead to her hatred.
Perhaps in this fanfiction, her parents have some secrets that Hermione discovers. These secrets could be related to the wizarding world and their connection to it. Their attempts to hide these things from her make her feel betrayed and thus lead to her hatred. For instance, if they knew about some dark magic in their family history but kept it from her.
One possible reason could be jealousy. Maybe she sees the Weasleys as getting things too easily in the wizarding world compared to her own hard - earned achievements. For example, they have a big family support system that she lacks, and she might envy that.
One possible reason could be that in the fanfiction, her parents might have made a sacrifice that left her alone, and she resents them for not being there for her. Maybe she feels abandoned and that has led to her hatred.
Well, it could be due to the way the Cullens interact with the other people in Forks. If Bella notices that they are being manipulative or using their powers in a way that she doesn't like to influence the townspeople, that could make her start to hate them. Also, if there is some kind of power struggle within the Cullen family that starts to affect Bella negatively, like she gets caught in the middle of it or she sees how it's causing harm to those she cares about, she might turn against them.
One possible reason could be the way he was treated as a child. He was ostracized and shunned by many villagers because of the Nine - Tails inside him. This constant rejection and coldness from the people around him might have led to his hatred in the fanfiction.
Perhaps in this fanfiction, there is some sort of misinformation. For example, someone has spread false rumors about Naruto being a threat to the village, and Minato and Kushina believe it without proper investigation. This could lead to their hatred.
One possible reason could be that the Cullens make a decision about her future without consulting her. For example, if they decide she should leave Forks for her own safety without asking her how she feels about it.
One possible reason could be a misunderstanding. Maybe some false information was spread about Kushina that made Naruto believe she was a bad person. For example, if there were rumors that she abandoned him for some untrue reason, it might lead to his hatred.
It could be that Yugao has a connection to an enemy or a group that Naruto dislikes. This connection could make Naruto view her with suspicion and ultimately hatred. In some fanfiction scenarios, she could be unknowingly involved with a plot against Naruto or his village.
It could also be related to personal relationships. Tsunade might have been hard on Naruto in a way that he felt was unjust. Perhaps she was overly critical of his unorthodox ninja techniques or his impulsive nature, and over time, this built up into hatred. Naruto, being someone who values respect and recognition, could have resented her for not seeing his potential in the way he wanted.