A lot of these fanfictions also deal with the idea of acceptance. Bella has to accept her new state as a vampire, and the Cullen family has to accept her as one of their own. There are often challenges and conflicts related to this acceptance process.
One popular 'Edward bites Bella' fanfiction might be those that explore the emotional aftermath for Bella. For example, it could show how she copes with the new vampire side of her life, like dealing with the thirst for blood and the changes in her relationships with her human friends and family. In some fanfictions, the story may focus on the unique bond between Edward and Bella that is intensified by this significant event.
Another reason could be related to the biology aspect specifically. In the fanfiction, the author may have created a unique lore where there is something in the biology of vampires and humans that makes a bite in a biology class significant. Maybe there are certain chemical reactions that occur only in a scientific environment like a biology class that are essential for the bite to have a particular effect, such as awakening a dormant power within Bella or creating a special bond between them.
One interesting story could be where Edward biting Bella has some unforeseen biological consequences that change the nature of their relationship in unexpected ways. For example, it might give Bella a new ability related to her senses, and the fanfiction could explore how she copes with this new aspect of herself while still being in love with Edward.
One interesting aspect could be how their relationship dynamics change. In the original, Edward was the vampire and Bella was the human, so reversing their roles might lead to a different power dynamic. For example, Bella as a vampire would have more physical strength and speed, which could make her more protective of Edward. Also, Edward as a human might struggle with his mortality compared to Bella's immortality, creating new tensions and storylines in the fanfiction.
There's also 'The Redemption of Edward Cullen'. This fanfiction explores Edward's past in more detail and how it affects his relationship with Bella. It adds new layers to his character and gives a fresh perspective on their love story.
Some popular 'Twilight Edward and Bella Fanfic' include 'A Glimpse Beyond Twilight'. This fanfic gives readers a chance to see what could have happened after the events of the original series. 'Edward and Bella: Unseen Moments' is also great as it reveals some of the unshown moments between them. 'Twilight Fanfic: Edward and Bella's Love Redefined' is another good one, as it redefines their love in a more complex and interesting way.
One great fanfiction could be where Edward and Bella's relationship is explored more deeply in a different vampire society setting. For example, they might be in a vampire clan that has unique rules about human - vampire relationships.
In many Twilight fanfictions, Edward and Bella's kiss is often depicted as an extremely passionate and intense moment. Some fanfictions might explore different scenarios around this kiss. For example, it could be set in an alternate universe where they meet under different circumstances before the kiss. The kiss in fanfiction can also be used to show a deeper connection between them than what was shown in the original books. It allows the writers to play with the emotions and the relationship dynamics in a more creative way.
One possible scenario could be that Bella is initially terrified but then realizes there's a deeper connection to Edward's bite. Maybe it unlocks some sort of hidden power within her. Another could be that Edward immediately regrets his action and tries to reverse the effects. It could also be that the bite sets off a chain of events in the vampire community, as it's an unexpected and early bite.