Well, in some fanfictions, it could be that the Weasleys betray Harry because of Voldemort's influence. Maybe they are Imperiused to turn against him.
It might start with a misunderstanding. For example, if there is some false information spread about Harry being a danger to the wizarding world, the Weasleys, who are very protective of their family and the wizarding community, could be misled into believing it and thus betray Harry. They might start to distance themselves from him, stop supporting him, or even work against him in some way.
Another possibility is a miscommunication or false accusation within the fanfiction world. Someone could spread lies about Harry among the Weasleys, leading them to believe he has done something terrible and thus turning against him. But this is a far cry from the deep bond they share in the official 'Harry Potter' story.
He might be extremely angry and confused. After all, parents are supposed to be the ones you can trust the most. He could start to question everything he knew about his family and himself.
A plot could involve a family secret. Maybe the Weasleys discover that Harry has some connection to an event in their past that they wrongly interpret as harmful, and this leads to their betrayal. For example, if they think Harry is related to someone who caused harm to their family long ago, even though it's a false connection.
In this fanfiction, the betrayal might also stem from jealousy. Harry is often in the spotlight, and the Weasleys, who have always been a big family but not always in the center of attention, could let envy get the better of them. This could lead to actions that Harry perceives as betrayal, like spreading rumors or withholding support when he needs it most.
Well, often in these fanfictions, if a Weasley is under Imperio, it can lead to a lot of drama. Let's say Ron is under Imperio. It could create a rift between him and Harry. The other Weasleys would then be on a mission to break the curse. Fanfiction writers might explore how the Weasley family dynamics change under such a dark spell. They might also show how different Weasleys react to the situation. Some might be more impulsive in trying to rescue the cursed one, while others might be more cautious and methodical.
In fanfictions where Fem Harry Potter is the heir of Slytherin, it can lead to a lot of interesting plot twists. For one, she could have a natural affinity for Parseltongue that she discovers early on. This could help her in solving mysteries or getting out of dangerous situations. Her Hogwarts experience would be very different. She might be more drawn to the darker arts in the library that are associated with Slytherin's legacy, but at the same time, she would be trying to break free from the stereotype of Slytherin being all about dark magic. Her character development could involve learning to balance the power that comes with being the heir while still being true to her Gryffindor - like values.
At first, Harry would probably be in shock. He has always considered Hermione one of his closest friends, so her betrayal would be a huge blow. He might not believe it at first and try to reason with her.
Well, in the original series, the bond between Harry and the Weasleys is one of the central elements that make the story so heartwarming. They support each other through thick and thin. In the 'harry potter hates the weasleys fanfiction', this is turned on its head. The fanfiction might change the way we see Harry's character development. In the original, the Weasleys play a big role in shaping Harry into the person he becomes. But in this fanfic, with the hate relationship, it would mean a completely different path for Harry's growth and his understanding of family, friendship, and the wizarding world.
Love could also play a role. Maybe one of the Weasleys falls in love with someone who has a vendetta against Harry. To please their love interest, they could end up betraying Harry. It's a more emotional and complex reason compared to the others, but it can add depth to the fanfiction story.
In regular fanfiction, we might see stories that are more in line with the positive aspects of the 'Harry Potter' world, like new adventures at Hogwarts or additional spells and magic. But 'Harry Potter betrayed' slash fanfiction delves into the negative emotions associated with betrayal. It could involve characters acting out of character in order to create a scenario where Harry or other main characters are betrayed. This can be a very different experience for the reader compared to the more traditional fanfics.