Perhaps the writer wants to explore a different take on the characters' personalities. Maybe they believe that under certain extreme circumstances, Remus could be pushed to the edge and act in a way that is out of the ordinary. By writing this type of fanfiction, they can develop their own theories about the characters and how they would interact in difficult situations.
Some writers might create 'Remus Hurts Harry' fanfiction to explore the darker side of the characters. It allows them to show that even beloved characters like Remus can have flaws and make mistakes that have serious consequences.
Some writers might write it to explore the darker side of characters. They want to see how a usually positive character like Rias can turn bad and how Naruto would react in such a situation. It's all about exploring different character dynamics.
Some might write it to explore the complex relationship between Snape and James. Since they were rivals at school, it gives a chance to delve deeper into their enmity. Maybe the writer wants to show a different side of Snape, not just as a victim of James' bullying but also as someone who could fight back and cause harm.
Some might write it to explore a different side of the characters. Maybe they want to see how the story would change if there was conflict between Hermione and Harry instead of their usual friendship.
Well, some writers might do it to explore different character dynamics. Maybe they think there are aspects of Harry and Ginny's relationship that were not fully explored in the original books. By having Harry dump Ginny, they can dig deeper into the individual characters' personalities and how they react to a break - up.
Well, some people might write it for shock value. They want to create something really out of the ordinary that will make readers go 'wow' or 'eww'.
There could be a fanfic where Remus is being controlled by a dark wizard and is forced to harm Harry. This would add an element of mystery and a plot to rescue Remus from the control while also dealing with the harm he has caused to Harry. Another type might involve a rift in their relationship, like if Remus believes Harry has done something wrong and in his anger, he hurts Harry, perhaps with words that cut deeper than physical harm.
Some might write it to explore a different side of the characters. It's a way to show how Harry and Sirius could be pushed to their limits and what they would do in extreme situations.
It could be a form of expressing a very different view of the Harry Potter universe. Some writers might feel constrained by the relatively positive and heroic nature of the original story and want to break free by creating something extremely contrasting. But this kind of fanfiction is likely to be frowned upon by many in the fandom. The original series has themes of love, friendship, and heroism, and this type of 'beaten to death' concept is a complete deviation from that. It might also be a result of the writer having some personal issues or a very different understanding of the characters and the world, but it's not a typical or welcome addition to the fanfiction landscape.
Perhaps they are fans of 'what - if' scenarios. In the original books, Harry marries Ginny. But by writing him with Fleur, they can create alternate storylines that deviate from the canon. This can be exciting for both the writer and the readers who enjoy exploring new and unexpected plot directions in the beloved Harry Potter world.
To explore different character arcs. Maybe they think that if Harry hated Ron, it would force both characters to grow in different ways. It could be a way of looking at how their personalities would develop without their friendship. Also, it could be a way to introduce new plotlines and conflicts in the Harry Potter universe.