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.
Maybe in the 'hermione rejects harry fanfic', Hermione rejects Harry because she has feelings for someone else. It could be that she has developed a deep connection with Ron in the fanfic's storyline, and her loyalty to that relationship makes her turn down Harry's advances.
One possible reason could be that Hermione sees Harry more as a friend. She has a deep, platonic bond with him and doesn't want to risk ruining that friendship by turning it into a romantic relationship. In the original story, they have been through so much together as comrades in the fight against Voldemort, and she may value that camaraderie above all else.
She could be rejecting Harry's proposal because she's still dealing with past traumas or unresolved issues. For example, she might be worried about how the public would view their relationship, especially given Harry's status as 'the boy who lived'. She also might not be ready for such a big commitment due to the instability in the wizarding world at that time. There could be a lot of political and social unrest, and she might feel that getting engaged is not a priority in such a situation.
In the 'harry rejects draco fanfiction', it could be due to the social divide between Gryffindor and Slytherin. Harry, as a Gryffindor, has been taught to distrust Slytherins. Draco's actions towards Harry's friends, like Hermione who is a Muggle - born, also contribute. Harry may reject Draco because he stands for the discrimination that Hermione has faced from Draco and his family.
One possible reason could be that Harry is too focused on his fight against Voldemort and doesn't want to put Ginny in danger. He might think that being with her would make her a target for his enemies.
In fanfics, the relationships between characters can be explored in new ways. If the fanfic writer decides to show a rift between Hermione and Harry for the sake of drama, they might create situations where Hermione doesn't believe Harry. This could be due to a series of miscommunications or actions that Harry takes which seem out of character to Hermione.
One possible reason is that the fanfic writer wants to create conflict. By making Hermione not believe Harry, it adds tension to the story.
Perhaps in the fanfic, Hinata has fallen in love with someone else. It could be a new character introduced in the fanfic's universe or someone she has come to know better over time, leading her to reject Naruto.
In 'harry gets rejected by hermione fanfic', perhaps Hermione has a pre - existing relationship or crush on someone else. It could be another character from the wizarding world. Also, she might be afraid of the potential consequences of being in a relationship with Harry, like how it could affect their friendship or the dynamics within their group of friends. She may also be dealing with personal insecurities that make her hesitant to enter into a relationship with Harry.
One possible reason could be Snape's long - standing grudge against James Potter, Harry's father. Since Snape had a difficult past with James, he might project that onto Harry. Another reason could be that Snape is trying to protect Harry in a very strange way. He may think that by rejecting Harry, he is keeping him at a distance from the dangerous wizarding world politics and plots that Snape is often involved in.
One possible reason could be a miscommunication. Maybe Hermione accidentally reveals a secret of Harry's that he didn't want known, and this causes him to feel betrayed and start to hate her. Another reason could be jealousy. If Hermione gets more attention or praise for her magical abilities than Harry in the fanfic, he might develop feelings of envy and hatred. Or perhaps there's a love triangle situation where Hermione is involved with someone Harry doesn't like, and that causes his hatred.