In fanfiction, a popular trope is the transformation trope. For example, there could be a situation where Bella is in danger of becoming a vampire against her will or there could be a possibility of a wolf - vampire hybrid. Alice can be part of the trope where she tries to manipulate events to avoid such a transformation. Another trope is the power struggle. The vampires might be seen as having more power, but the wolves have their own strength in numbers. Bella is caught in the middle of this power dynamic. There's also the trope of the outcast. Bella might feel like an outcast because she is involved with both the wolves and the vampires, and Alice can either help her fit in or make things more complicated.
Well, Bella is usually the center of attention. She's the one who bridges the gap between the wolf pack and the vampires. The wolves are presented as having a strong sense of community and loyalty. They might be in conflict with the vampires at times because of their different natures. Alice, on the other hand, is like a guiding force. She uses her gift to foresee events that could impact Bella and the others. Vampires can be made to seem more human - like in their emotions or they could be the ultimate predators, and it all depends on how the author wants to tell the story in the fanfiction.
One popular trope is the 'forbidden love' trope. Given Zero's status as a vampire hunter and his vampire blood, a relationship with a pure - blood vampire like Yuki can be seen as forbidden. Another trope is the 'redemption' trope. Writers often explore Zero's journey to redeem himself, either from his past actions or from the 'curse' of his vampire blood. It adds depth to his character.
The 'soulmate' trope is quite popular too. The idea that Scott and Bella are meant to be together, perhaps connected on a deeper, almost spiritual level. This trope can lead to some really heart - warming and emotional fanfictions. It often involves signs or premonitions that they are meant for each other.
One popular trope is the 'enemies to lovers' where Bella and Klaus start off hating each other but then gradually fall in love. It adds a lot of tension and drama to the story.
There are several great Bella and Alice fanfiction stories. For instance, 'The Mysterious Connection between Bella and Alice' delves into a psychic or magical connection that they might share, which was only hinted at in the original series. 'Alice's Influence on Bella' shows how Alice's unique personality and abilities slowly transform Bella into a more confident and independent person. 'Bella and Alice: Parallel Worlds' is an exciting one where they get to experience different parallel universes together, each with its own set of challenges and wonders.
One popular trope is the 'enemies to friends' or 'enemies to lovers' trope. It's about how they start off as adversaries but gradually develop a different relationship. Another is the 'roommate' trope where they end up sharing living quarters and have to deal with each other on a daily basis.
One common trope is the vampire's alluring and seductive nature. Their charm often draws the human characters in. Another is the idea of the vampire's immortality adding an element of mystery and a different perspective on time and relationships. Also, the concept of blood - drinking being an erotic act in itself, with the sharing of blood symbolizing a deep connection between the vampire and their lover.
One possible fanfiction could be about Bella adjusting to her new vampire life while Alice, as a human, has to deal with the knowledge of the supernatural world in a different way. Maybe Bella tries to protect Alice from other vampires who might see her as a target because of her connection to Bella.
A plot could be that Bella, as a vampire, has to pretend to be human around Alice's family. This would involve a lot of hiding her powers and dealing with the difficulties of being around humans all the time. Another idea is that Alice, as a human, discovers a way to make Bella more 'human - like' again, and they embark on a journey to find the ingredients or perform the rituals necessary.
One common trope is the discovery of unique abilities. For example, the reincarnated wolf might find it can communicate with other animals in a special way, which helps it survive and thrive in the new world. Another trope is the formation of a pack. The wolf protagonist often gathers other animals or even other reincarnated beings to form a unique community. And of course, there's the struggle against human encroachment, as the wolf tries to protect its territory from humans who don't understand its new - found intelligence and abilities.