One key plot point could be the moment when Snape first shows a sign of not hating Harry. Maybe it's during a dangerous situation where Snape protects Harry instead of being cold towards him.
One possible reason could be that in the fanfic, Snape realizes Harry has more of Lily in him than he initially thought. Harry might show kindness or a particular trait that reminds Snape of Lily, softening his feelings.
It re - imagines their relationship as more of an understanding one. Instead of the constant hostility, they might start to have moments of mutual respect.
One possible reason could be that in the fanfiction, the author might explore Snape's complex past with Harry's mother, Lily. Snape's love for Lily could translate into a more nuanced view of Harry. He may see parts of Lily in Harry and that softens his hatred.
It could be that there are some underlying reasons within the plot of the fanfic. For example, Harry might have some sort of trauma or moral stance that prevents him from competing. Or perhaps he's more focused on other aspects of his life, like exploring magic in a non - competitive way, or building relationships. So he simply chooses not to compete.
Yes, there are many fanfictions that focus on their relationship in a non - inappropriate way. For example, some might explore their mentor - mentee relationship, with Snape guiding Harry in his potions skills or in understanding the darker aspects of magic from a more educational perspective.
Maybe Harry is a pacifist in this fanfic. He could have moral objections to fighting, believing that there are better ways to resolve conflicts, such as through dialogue or negotiation.
Well, it could be that in the fanfic world, the writer wants to add some drama. So they make Hermione not believe Harry. It could be because of new characters introduced who spread false rumors about Harry, causing Hermione to be skeptical. Also, it might be related to some secrets Harry is keeping that Hermione discovers in a way that makes her question his honesty.
In some fanfics, the relationship dynamics are deliberately changed for the sake of creating drama or exploring different storylines. So, the author might have made Harry not like Ron to introduce conflict. This could involve things like Ron being too overbearing or not understanding Harry's needs as much as he should in the fan - created scenario.
It could be that in this particular fanfic's universe, Harry follows a different cultural or religious belief that prohibits him from celebrating Halloween. This new set of beliefs might have been introduced in the fanfic's unique storyline.