Well, it could start with Bella being brought to the Volturi under mysterious circumstances. As she becomes the king's mate, she discovers secrets about the Volturi's past that could change everything. She might also develop new powers or abilities due to her connection with the king. This could lead to a series of events where she has to prove herself to the Volturi, while also trying to maintain her own sense of self. There could be a lot of tension between her loyalty to the Volturi king and her old ties to her human family and friends in Forks.
Another plotline could involve Bella being used by the Volturi in their political games against other vampire covens. She, being a human - turned - mate, has unique abilities or a certain influence that they want to utilize for their own gains. And as she realizes this, she has to figure out how to resist or turn the situation to her advantage.
Yes, there are likely fanfictions out there with this concept. The Twilight series has a large fanfiction community, and the idea of Bella having a different relationship like being the Volturi king's mate can be an interesting twist on the original story. It allows fans to explore different character dynamics and scenarios that weren't in the official books or movies.
A possible plotline could be that Bella's sister is initially in danger, and Carlisle saves her. This event sparks their connection. Then, they start to secretly meet, trying to hide their relationship from both the human world and the Cullen family. Another plotline might be that Bella's sister has a special power that attracts Carlisle, and they explore their relationship while trying to figure out what this power means for them.
One idea could be that Bella Swan's cousin, who is unaware of the vampire world at first, travels to Italy for some reason. There, by chance, they meet a Volturi member. The Volturi member is initially intrigued by the cousin's unique scent or personality. As the story progresses, they start to develop a bond that defies the Volturi's strict rules about relationships with humans. This could lead to a lot of internal conflict within the Volturi and also put the cousin in danger from other vampires who don't approve of this relationship.
One common theme is forbidden love. Since the Volturi are vampires and Bella Swan's cousin is human (usually), their relationship goes against the norms of both their worlds. Another theme is the power struggle. The Volturi are powerful, and the cousin may have to navigate through that power structure. Also, self - discovery is often present as the cousin discovers new aspects of themselves through this unusual relationship.
Edward Cullen might also be an important character in some aspects. Since Bella was originally in a relationship with him, his reaction to Bella becoming a mate to the Volturi could be an interesting part of the story. There could be scenes of jealousy or attempts to win her back.
One popular 'bella swan cousin volturi's mate fanfiction' is 'The Volturi's Unforeseen Bond'. It delves into the complex relationship between Bella Swan's cousin and a member of the Volturi. The story is filled with intrigue as it explores how the two characters from very different worlds come together. It has great character development and a captivating plot that keeps readers hooked from start to finish.
One interesting plotline could be Bella's struggle to adapt to the Volturi lifestyle while being Caius' mate. She might face opposition from the other Volturi members, adding drama.
Perhaps she is deceived. In some fanfictions, she could be tricked into believing that the Volturi are the 'good guys' or that they can offer her something that the Cullens can't. It could be a false promise of safety or a way to protect her loved ones that leads her to become a Volturi member.
One reason could be the allure of the vampire - human relationship in both the Twilight and Vampire Chronicles universes. Writers might want to combine the two to see how Bella's experience with vampires like Edward in Twilight could translate to a relationship with Lestat.