Well, 'The Parselmouth of Gryffindor' is a notable Harry Potter fan fiction book. It plays around with the idea of a Gryffindor having the ability to speak Parseltongue, which is quite an interesting concept. 'After the Battle' is another one. It imagines what happens to the characters after the final battle in the original series. Fan fiction books like these allow fans to continue the story in their own imaginative ways.
One popular Harry Potter fan fiction is 'The Life and Times of Severus Snape' which delves deep into Snape's backstory. Another is 'Harry Potter and the Methods of Rationality' which offers a different take on the wizarding world with a more scientific approach.
One popular theme is the exploration of different character relationships. For example, expanding on the friendship between Harry, Ron and Hermione in new and unexpected ways. Another theme is alternate universes, like a world where Voldemort won. Also, there are many fan fictions that focus on the backstories of minor characters, giving them more depth and significance.
One popular theme is 'what if' scenarios. For example, what if Harry had been sorted into Slytherin? Another is exploring the backstories of minor characters like Neville's parents. Romance is also common, such as Hermione getting involved with a different character than Ron. There are also fan fictions that focus on the magical creatures in more detail, perhaps a story centered around a hippogriff or a thestral.
Some great 'Harry Potter fan fiction novels' include 'Harry Potter and the Methods of Rationality'. It presents a more scientific and rational take on the wizarding world, with Harry using logic and scientific thinking. 'Daughter of the Dark Lord' is also quite popular, imagining a scenario where Voldemort has a daughter and how that would change the story. 'Hermione Granger and the Time - Turner Conspiracy' is another interesting one that plays with the idea of time - travel and Hermione's character.
Some of the more popular ones tend to be those that pair him with other famous figures in a fictional relationship. These can be really interesting as they blend the real - world fame of different people in a creative way. But again, the definition of 'popular' can vary from person to person depending on their interests in the genre.
Well, a common theme is alternative timelines. Writers might create stories where different choices were made during key events in the Harry Potter series, and then show how the characters' lives are different as adults. There's also the theme of the characters' careers. We could see Harry as an Auror in more detail, facing complex cases as an adult. And of course, the theme of family. How do the characters start their own families? What kind of parents would they be? These are all things that are often explored in Harry Potter adult fan fiction.
One popular 'Harry Potter Couples Fan Fiction' story could be those about Harry and Hermione. Some writers explore their relationship in alternate universes where they might end up together instead of with their canon partners. Another could be about Draco and Ginny, creating a sort of 'forbidden love' scenario between a Slytherin and a Gryffindor.
Many Harry Potter fan fiction stories revolve around the idea of new magical creatures or abilities. Writers create new species of magical animals or give existing characters new powers. There are also stories that center around the Hogwarts houses and how they interact in different situations, which is really interesting as it delves deeper into the Hogwarts world.
I'm not aware of any specific 'dirty harry potter fan fiction' stories as the term 'dirty' might imply inappropriate or non - canon content which is not typically promoted. However, there are many great Harry Potter fan fictions that follow the spirit of the original series. For example, some focus on alternative character relationships within the wizarding world that are based on friendship and adventure rather than anything improper.
One of the most popular genres in Harry Potter fan fiction is 'What - If' scenarios. For example, 'What if Harry had been sorted into Slytherin?' It allows fans to explore different paths the story could have taken. Another common genre is Romance, like Harry and Hermione getting together instead of Harry and Ginny.