One possible reason could be a misunderstanding. Maybe he discovers some secrets about his parents that he misinterprets. For example, if he finds out they were involved in some dangerous or morally ambiguous activities in their youth that he doesn't fully understand at first.
Well, it completely flips the typical relationship dynamic. Usually, Harry idolizes his parents. But in this fanfiction, by disowning them, it creates a sense of conflict and chaos. It might make the story darker as Harry is now sort of an outcast not just in the wizarding world in general but also from his own family legacy.
One possible plotline could be Harry feeling extremely lost and alone at first. He might have to find a new place to live, perhaps with the help of his friends like Ron and Hermione. He could struggle with self - worth, constantly wondering what he did wrong to make his parents disown him.
Harry would likely become more self - reliant. Without the support of his parents, he'd have to learn to take care of himself. He might grow more cautious and distrustful, especially if he doesn't know the real reason for the disownment.
Harry could start writing in a journal, documenting his feelings. This would be a way for him to process his emotions privately. He might also find solace in nature, spending time in the Forbidden Forest, where he can be alone with his thoughts and away from the prying eyes of those who pity him.
Perhaps Harry is disowned because his parents believe he has been corrupted by dark magic. So he has to prove his innocence and find a way to reverse their decision. Along the way, he meets a mentor who helps him master his magic in a new and unique way, different from what he would have learned from his parents.
She often then becomes determined. She realizes she has to rely on herself. So, she starts to explore her magic more independently. In some fanfictions, she might begin to study in secret or practice spells on her own to become stronger. She also might look for new allies, like other outcasts in the wizarding world. This could include befriending house - elves or half - bloods who have also faced discrimination. As she progresses, she can become a very strong and independent character, using her past pain as motivation to succeed.
One popular 'Fem Harry Potter Disowned by Parents' fanfiction is 'The Lost Potter'. It really delves into how a female Harry would cope with such a harsh situation. She has to find her own way in the wizarding world without the support of her family. Another great one could be 'Abandoned by Blood' which shows her journey of self - discovery while facing the challenges of being disowned. It's interesting to see how the author portrays her building new relationships and finding her true power.
Yes, there might be some extremely dark and out - of - canon fanfictions out there with such a disturbing premise, but it goes against the general nature of the original story where Harry's parents loved him deeply. However, in the vast world of fanfiction, people can create all kinds of strange and often inappropriate scenarios.
Hermione would be a very likely character to support Harry. She's his best friend and is always there for him in the original story. Ron too, as they are a trio. Neville could also step up, as he has his own growth arc and could understand Harry's feeling of being alone to some extent.