In some cases, a powerful and rogue vampire who has his own agenda could be the main antagonist. This vampire might be after Bella for some special ability she has or he could have a vendetta against Rosalie. He would constantly be causing trouble for them, trying to disrupt their lives and relationships within the Cullen family.
One possible plot is that Rosalie and Bella start to understand each other's perspectives better. Maybe Bella starts to see Rosalie's insecurities about her transformation and Rosalie begins to respect Bella's courage. This could be a story about mutual growth and acceptance between the two characters, with them sharing their experiences and learning from one another.
You can start by looking on popular fanfiction websites such as Archive of Our Own (AO3). It has a large collection of fanfictions across various fandoms, and there's a good chance you'll find some related to Bella and Rosalie there.
Another idea for a fanfiction could be that Bella and Rosalie are part of a prophecy. They have to fulfill certain tasks to save their community. Along the way, they learn more about their own powers and the bond between them deepens as they face numerous challenges.
It could be other vampires who are jealous of their unique relationship. Maybe there are some traditionalist vampires who don't accept this new kind of mating bond among them.
Well, clearly Rosalie and Baby Bella are the main characters. Rosalie is a strong - willed and beautiful vampire in the Twilight series, and in the fanfiction, she has a significant role in relation to Baby Bella.
Rosalie and Bella are the central characters. Rosalie, with her strong personality and unique backstory as a vampire, plays a crucial role in the story. Bella, on the other hand, is the character who is being adopted. There might also be other characters from the Twilight universe who could make appearances, like Edward or the other Cullen family members, but Rosalie and Bella are the main focus.
It's Bella and Rosalie. Bella, the human - turned - vampire with a unique charm and a knack for getting into extraordinary circumstances. And Rosalie, the elegant and sometimes aloof vampire. As mates in this fanfiction, their relationship will drive the story. Their different backgrounds, Bella's human past and Rosalie's long vampire existence, will create interesting dynamics as they navigate their new relationship together.
Well, obviously Rosalie and Bella are the main characters. Rosalie, the beautiful and somewhat aloof vampire, and Bella, the human - turned - vampire. Their personalities are quite different, which makes for an interesting dynamic in the fanfiction.
Well, in this fanfiction, Alice is the one who might be seen as the 'seer' of the group. She can pick up on things that others miss. Rosalie is the strong - willed and confident character. And Bella, she's like the heart of the group, bringing a sense of warmth and relatability. They all play important roles and their interactions drive the story forward.
The main characters are obviously Bella and Rosalie. Bella, a human - turned - vampire, is known for her strong will and her complex relationship with the Cullen family. Rosalie, on the other hand, is a beautiful and somewhat aloof vampire with her own set of insecurities and desires. In these fanfictions, their relationship as mates takes center stage, and other characters from the Twilight series like Edward, Alice, and Carlisle may also play important supporting roles as they are part of the Cullen family and are affected by Bella and Rosalie's new relationship.