One common theme is the discovery of new magic. Since fairies have their own kind of magic, when combined with Harry's wizarding magic, it creates a whole new set of possibilities for spells and magical abilities.
Another theme is the idea of friendship across different magical species. In these fanfics, Harry forms a bond with the fairy, which often helps him in his battles or in understanding different aspects of the magical world. For example, the fairy might teach Harry about the natural magic that exists in forests and meadows, which is very different from what he has learned at Hogwarts. This friendship also shows how two very different beings can support each other.
The theme of adventure is also quite common. Harry and the fairy usually embark on some sort of journey together. It could be to find a lost magical artifact, or to save the fairy world from a dark force. Along the way, they face various obstacles and enemies, which makes for an exciting story. These adventures not only test their individual strengths but also strengthen their relationship as they rely on each other to overcome difficulties.
Often, themes of friendship and adventure might be common. Since they are fictional characters, they could go on various adventures together.
Romance is likely a very common theme. Writers might explore how Harry and Lisa could fall in love, perhaps over coming cultural or world - view differences. They could start off as strangers and gradually develop feelings for each other through shared experiences in a new, made - up world.
Another theme is self - discovery. Harry and Cho are both at an age where they're still figuring out who they are. Fanfics often explore how their relationship helps them in this journey, like Harry becoming more in touch with his emotions through his interactions with Cho.
Another theme is self - discovery. The characters of Harry and Louis are often on a journey of self - discovery in relation to their feelings for each other. In some fanfics, they have to figure out who they are and what they really want in terms of their relationship.
One common theme is the exploration of family bonds. Since James is Harry's father, many fanfics focus on how they could have interacted if James had been alive. Another theme is the passing on of knowledge or skills from father to son.
One common theme is friendship. Since both Luna and Harry are unique characters in the Harry Potter universe, their friendship is often explored in fanfics. Another theme is the discovery of hidden magic. Luna's penchant for the strange and unknown often leads them to find new magical things together.
Rebellion against the status quo can also be a theme. Sirius is a bit of a rebel, and he encourages Harry to question things. So in many fanfics, they might be involved in actions that go against the traditional rules of the wizarding society. And of course, the theme of friendship - a deep, unbreakable friendship that could be seen as more than just friendship in some interpretations.
One common theme is friendship. Since they may come from different backgrounds, the fanfics often explore how they become friends. For example, they might have to overcome initial misunderstandings.
One of the main themes is protection. Harry might feel the need to protect his sister from the dangers that lurk in the magical realm, like the dark wizards. Friendship can also be a theme as the sister might make new friends at Hogwarts, and Harry has to deal with his feelings about that. Also, self - discovery is common. The sister may be finding out who she really is and Harry is there to support her in that journey.
Friendship is a very common theme. They are often portrayed as having a deep bond that goes beyond just being teammates in Quidditch.