One possible reason could be a misunderstanding. Maybe Hermione was wrongly accused of something, like cheating in schoolwork, and her friends believed the false rumor without giving her a chance to explain. Another reason might be jealousy. If Hermione was achieving too much academically or magically, her friends could have felt overshadowed and distanced themselves from her.
In some fanfics, it could be due to external influence. For example, a dark wizard might have cast a spell on her friends to make them turn against her. Or perhaps there was a prophecy that made her friends think she was a danger to them, so they abandoned her out of fear for their own safety.
Well, sometimes in fanfiction, the author wants to explore the theme of loneliness. So they create a scenario where Naruto's friends abandon him because they are influenced by the village's elders. The elders might spread false rumors about Naruto to maintain their control. His friends, being young and naive, believe these rumors and turn their backs on Naruto, which then leads to Naruto's journey of self - discovery and growth in solitude.
Sometimes, it could be a matter of different loyalties. Naruto's friends might have family or other obligations that conflict with their loyalty to him. For instance, if their families are threatened by someone who demands they betray Naruto, they might feel compelled to do so out of a sense of protecting their loved ones.
Well, it might be that Hermione has seen Harry's impulsive side a bit too much. She's a very logical person, and Harry's tendency to jump into dangerous situations without fully thinking things through could be a turn - off. In the fanfiction, she may also feel that Harry has too much of a hero complex, and she doesn't want to be in a relationship where she's constantly worried about him getting into life - threatening situations. Maybe she also values her friendship with Harry so much that she's afraid a romantic relationship could ruin it and she decides to reject him to preserve their friendship.
One possible reason could be a mission gone wrong. Maybe Kakashi thought Naruto was too much of a liability during a particularly dangerous mission and, out of a sense of harsh pragmatism, decided to abandon him to ensure the success of the mission and the safety of others. However, this would be very out of character for Kakashi as he has always been protective of his students.
One possible reason could be a conflict with her friends. Maybe there was a misunderstanding during a quest, like her ideas were not taken seriously by the group. For example, she had a well - thought - out plan but others ignored it, which made her feel unappreciated and thus upset.
Maybe it didn't have enough market potential. Disney needs to consider whether a story will be popular enough to make into a movie or other product. If the original story is too niche or not appealing to a wide enough audience, they could decide to abandon it.
Well, one reason could be that she discovers some long - lost family inheritance. Maybe her family had a hidden vault full of gold and magical artifacts that she stumbles upon. It's a common trope in fanfiction to give characters unexpected inheritances.
One reason could be to create drama. The shock value of Ron cheating on Hermione would be high, and it could lead to a lot of emotional turmoil in the story.
One possible reason could be that Hermione has a different romantic vision. In the original series, she might see Harry more as a friend. In the fanfic, her character could be written as being focused on her own personal growth and goals, which don't align with a romantic relationship with Harry.
One reason could be the writer's desire to create a more relatable Hermione. By making her less smart, she might seem more human with flaws. Another reason could be to shift the focus to other characters. If Hermione is not the all - knowing one, other characters can step up and show their own intelligence or problem - solving skills.