I'm not sure about a specific one but generally, in such fanfictions, the author often explores Harry's struggle with his identity. He was a hero before, but now being a werewolf, he has to face prejudice. Some fanfictions might show him finding new powers related to his werewolf side. For example, he could have enhanced senses that help him in battles or in solving mysteries. It's all about how the writer wants to take the character in a new and different direction.
Typically, it starts with the event of Harry getting bitten. Then, it often shows his immediate reaction, like shock and fear. Next, his friends' reactions are explored, whether they are accepting or afraid. The plot may then develop as Harry tries to find a cure or learn to control his new werewolf nature. For example, he might seek help from Lupin or other werewolves.
It could be the werewolf who bit Harry. Maybe the werewolf has some ulterior motives, like using Harry as a pawn in a bigger plan against the wizarding world. Or it could be some pure - blood wizard supremacists who see Harry's new werewolf status as a sign that he is now 'impure' and want to get rid of him.
Over time, they would probably come to accept Harry for who he is. Their friendship could become even stronger as they support Harry through his new challenges. They might even start to fight for werewolf rights within the wizarding world because of Harry's situation.
Well, one possible plot development could be Harry struggling to control his new werewolf nature. He might have to deal with the stigma within the wizarding world. For example, some might fear him or treat him differently. Another aspect could be his relationships changing. His friends might be initially shocked but then try to support him in finding a way to manage his condition. Maybe he also discovers new powers or abilities related to his werewolf side that he has to learn to use properly.
The story would change drastically. First, Harry's identity would shift from just a regular wizard to a werewolf - wizard hybrid. His daily life would be completely different. Instead of just worrying about Voldemort and schoolwork, he'd have to deal with the monthly transformation and the stigma that comes with being a werewolf. His relationship with Dumbledore might also change. Dumbledore would need to figure out how to handle this new situation, whether to keep it a secret or find a way to manage Harry's new condition in the open.
In the 'Harry Potter gets bitten by a vampire' fanfiction, there are numerous possibilities. Harry's appearance might change, with paler skin and perhaps sharper features. His magical abilities could be affected in strange ways. For example, his Patronus might change form due to his new vampiric nature. He could also form new alliances with creatures that are more accepting of vampires, like some werewolves who might see him as a kindred spirit in a way. This could create a rift between him and some of his old friends who are more traditional in their views of the wizarding world, but it could also open up new opportunities for him to explore different aspects of magic and the supernatural that were previously hidden from him.
Well, it could lead to her being ostracized by some in the wizarding community. People might fear her new werewolf nature, just like they did with Lupin. This could make her feel isolated and struggle with her identity. She might also have to learn to control her newfound instincts, which would be a huge challenge.
Perhaps a plotline where Harry's werewolf bite changes the way the wizarding community views him. Some might see him as a threat, while others might see him as a symbol of the intersection between different magical beings. This could lead to a whole new set of challenges and alliances for Harry.