Well, in fanfiction, if Vitani is Nala's daughter, perhaps there could be a story where Vitani is in danger. Nala then uses all her strength and wisdom to protect her daughter. It could also be that Vitani is born during a difficult time for the pride. Nala has to teach Vitani how to survive in a tough environment. And Vitani might grow up to be a symbol of hope and strength for the pride, following in her mother's footsteps.
In fanfiction, anything can be possible. Vitani could be Nala's daughter in a creative interpretation. Maybe the story could involve Vitani growing up with the traits she inherits from Nala. For example, she might have Nala's courage and grace. It could also explore how the relationship between Vitani and other characters like Simba is affected by this new family connection.
One scenario could be that a powerful magic spell backfires and turns Bellatrix into a small animal that Harry then takes in as a pet. Another could be that in an alternate universe created in the fanfiction, the power dynamics are so different that Bellatrix is somehow subjugated to Harry and made into his pet.
One possible scenario is that she learned some racist slurs from her classmates and started using them without really understanding the harm. Another could be that she has some internalized biases from her family's unspoken attitudes, even if her parents didn't directly teach her racism. For example, if the family lives in a predominantly white neighborhood and has limited interaction with other races.
In some fanfictions, Naruto could find out in a very emotional way. For example, his daughter might be in danger, and when he discovers she is his, his feelings of love and the need to protect her are intensified. He might also struggle with the fact that he has missed out on part of her life so far. He'd then start to make up for lost time by spending as much time with her as possible, teaching her ninjutsu and sharing his own life experiences.
One possible scenario is when the imprint causes Jacob to be very protective of the person he imprints on. Bella might see this as Jacob neglecting their previous friendship or bond. Another scenario could be that the person Jacob imprints on has a negative attitude towards Bella, and Jacob seems to side with the imprinted one, making Bella hate the whole situation.
One possible scenario is when Artemis criticizes Percy's fighting style. Percy has his own way of battling monsters, which is effective but might not be as refined as the way the hunters of Artemis do it. If Artemis were to publicly criticize his style in front of others, it would surely wound Percy's feelings. He might feel like he is not good enough in her eyes.
In a more dramatic scenario, during a battle at Hogwarts. Snape might find Harry injured and touch him gently to assess his condition. This could be a very poignant moment as Snape, who has always had a difficult relationship with Harry, is now showing a side of concern. It could also lead to a new level of respect between them.
One scenario could be that Harley gets more attention from a love interest. If there is a shared love interest in the fanfiction, and Harley is always getting the girl or boy's attention, Peter would be jealous.
Perhaps in the fanfiction, Scott falls in love with someone that Stiles also has feelings for. This love triangle situation could turn Stiles' feelings into hatred as he sees Scott as a rival for the person he cares about. Also, if Scott accidentally reveals one of Stiles' secrets that he promised to keep, Stiles would likely be very angry and could start to hate Scott.
One possible scenario is that Minato was resurrected in a wrong way in the fanfiction. His behavior after resurrection was not what Naruto expected. Maybe he was more cold - hearted or seemed to have different priorities that didn't include Naruto, so Naruto started to hate him.