One possible power Bella could inherit is a heightened sense of perception. Caius's bloodline might have a natural ability to sense things that are hidden or far away. For example, Bella could be able to detect the presence of other vampires from a great distance, or sense danger before it's visible. This would give her an edge in the dangerous vampire world she is part of as Caius's great - granddaughter.
She could inherit enhanced strength. Caius is a powerful vampire, and strength is a common trait in vampire bloodlines. So Bella might be able to overpower other vampires or supernatural beings more easily.
Bella could potentially inherit the power of mental influence. Caius might have some level of mental control over others, and this could be passed down to Bella. It would allow her to sway the minds of humans or even some weaker vampires in certain situations.
Well, it could start with Bella being completely unaware of her connection to Caius. Caius, on the other hand, discovers her existence and decides to keep an eye on her from afar. As the story progresses, Bella might get into some trouble related to the vampire world, and Caius steps in to save her. This event could lead to a slow - building relationship where he reveals to her who he is and their family connection.
At first, it might be a bit rocky. Bella, being human and now blind, is in a very vulnerable state. Caius, as a powerful vampire, may come off as intimidating. But as time goes on, they start to develop a deep bond. Caius learns to be more gentle and caring, and Bella starts to trust him more and more.
Well, Caius could be very possessive and see Bella's blindness as something that makes her even more his. He would be by her side all the time, guiding her physically when needed. He might also share his vampire senses with her in some way, like describing the world around them in vivid detail so that she can 'see' through his words. And he would definitely be very angry if anyone made fun of or took advantage of her blindness.
The plot could involve Caius hiding his true identity from Bella for a long time. She might grow up thinking she has a normal father, until strange things start to happen. For example, she notices that her father never ages. Then, when she discovers the truth, she has to come to terms with being part vampire herself. Caius would then have to protect her from those who might want to harm her because of her unique heritage.
In such a fanfiction, it could completely change the dynamics of the Twilight universe. Caius, being a powerful and somewhat cruel vampire in the Volturi, as Bella's father would bring a whole new set of storylines. Maybe he would be overly protective in a very different way compared to Charlie. He might use his vampire powers to keep Bella in a sort of 'gilded cage' for her safety, which could lead to a lot of conflict with the Cullens and other characters. It could also explore how Bella's character would develop differently, growing up with a vampire father and the knowledge of the vampire world from a very different perspective.
In this scenario, Bella's life would be full of political intrigue. She'd be caught between her father Aro's expectations and her relationship with Caius. Her relationship with Caius might not be a smooth one at first. They might have to overcome their differences, like Caius' traditional views on vampires and Bella's more modern or human - influenced ideas. But as they grow closer, they could start to change each other's perspectives.
One possibility could be that their baby has unique powers. Since Bella has her own set of abilities and Caius is from a special vampire lineage, their child might inherit a blend of powers. For example, it could have super strength like vampires but also an enhanced mental connection like Bella's gift. The story could then focus on protecting this child from those who might want to use its powers for their own gain.
One common theme is the struggle between different vampire clans. Since Caius is part of the Volturi and Bella has her own connections, this often creates a backdrop of power struggles and politics in the fanfiction.
Often, bella x caius fanfiction features a relationship that is somewhat dark and intense. Caius being part of the Volturi has his own set of power and authority, which adds an element of danger to the relationship with Bella.
Well, it could start with Bella being captured by Caius. As his pet, she is forced to live in his lair. Caius might be possessive of her and not allow her to interact with others. Bella, being a strong - willed character, tries to resist this new role. She could start to learn about Caius' past and weaknesses in order to find a way to break free. There could also be a love - hate relationship developing between them, where Caius starts to have unexpected feelings for Bella as more than just a pet, which further complicates the situation.