Well, the theme of loneliness is quite common in Leah Clearwater fanfiction. She often feels isolated in the pack. Her search for acceptance, both within the pack and from others outside, is also a frequent theme. And many stories explore her relationship with her family and how it affects her. For example, her bond with her brother. These themes help to build a more complex and relatable character in the fanfiction world.
I'm not entirely sure as the 'grunt story' isn't a widely known mainstream narrative. But generally, Leah Clearwater and Jacob Black are characters from the Twilight series. Leah is a werewolf and has her own complex relationships within the werewolf pack. Jacob has his own story arcs involving his love for Bella and his role in the werewolf community. Maybe in this 'grunt story' there could be some specific adventures or interactions between them that are unique to this particular telling.
Power dynamics is also a common theme. When Leah crosses over, she may encounter characters with different levels of power. Sometimes she has to learn to deal with being more or less powerful than others. Friendship and alliances are important too. She forms new relationships in these crossovers, which can be a central part of the story.
Another theme is power. As a vampire, Leah gains new powers, and fanfictions often explore how she uses or misuses these powers. Some stories might show her using her strength to protect others, while in some she might be tempted to use it for revenge.
Another theme is the exploration of different cultures. Hermione represents the wizarding culture, and Leah represents the werewolf culture in Twilight. Fanfictions often show how they interact and learn about each other's cultures.
Another theme is growth. The relationship between Leah and the OC helps them both to grow as characters. In some fanfictions, the OC might have a special power or ability that Leah learns from, or Leah's own strength and resilience inspire the OC. This mutual growth is often explored in different ways depending on the story.
One idea could be a crossover where Leah Clearwater somehow finds her way into the wizarding world of Harry Potter. Maybe she has a special ability that is mistaken for magic and she gets enrolled at Hogwarts. She could form an unlikely friendship with Harry and his friends, and together they face some new kind of threat that combines the magic of the wizarding world and the supernatural elements from Leah's world.
A frequent theme in Jacob Black and Leah Clearwater fanfiction is their relationship with the Cullens. Since the Cullens are vampires in the Twilight world, their interactions with Jacob and Leah can be very interesting. Fanfictions may explore whether they can co - exist peacefully or if there are always going to be tensions. Also, the theme of self - discovery is common. Both characters are evolving, and fanfictions can show how they come to understand themselves better over time.
Well, I really liked 'The Hidden Strength of Leah Clearwater'. It focuses on her inner strength and how she overcomes various challenges. 'Leah's Secret Admirer' is also quite interesting, where a mysterious character has feelings for her. And then there's 'Leah in the City', which is a unique take on her leaving the reservation and experiencing urban life.
Another theme could be friendship and alliance. Writers might create stories where Harry and Leah form an unlikely friendship. They could then use their combined powers and knowledge to face challenges, like a new dark force that threatens both their worlds. It's also possible to see themes of self - discovery in these fanfictions, as Leah might learn more about herself in the context of the magical world, and vice versa for Harry.