Well, in some fanfictions, 'bella kills aro' could be part of a larger story arc where Bella has gained new powers or is trying to protect someone or something she loves. It could be that Aro has become a threat to her family or friends in the fanfiction's unique universe, and she decides to take matters into her own hands.
Obviously, Bella and Aro are the main characters. Bella is often the central figure in Twilight - related fanfictions, and in this one, she's the one doing the killing. Aro is a significant character from the Twilight series as well, and here he's the target.
Well, it could be that Bella, in a different turn of events, discovers a side of Aro that she didn't expect. Maybe she sees his vulnerability when he's not in his usual powerful role. This unexpected discovery could lead to a slow - burning attraction between them, despite their different natures.
One possible plot could be that the baby has unique powers. Since Bella has her own set of abilities and Aro is from a powerful vampire family, the baby might inherit a combination of their traits. For example, it could have the power to read minds like Aro but also be able to resist other vampire powers like Bella. The story could then revolve around protecting the baby from those who might want to use its power for their own gain.
Perhaps a plot where they try to find a way to ensure the baby has a normal life. They might search for ancient vampire or human lore that could help. It could also be interesting if they face external threats during the pregnancy, like other vampire covens who see the baby as a threat or an opportunity.
One idea could be that Aro discovers a unique power within Bella that no other vampire has. This makes him extremely interested in her, not just for her blood but also for her potential. He then tries to court her in his own, rather unusual way, which could involve showing her the secrets of the Volturi and their history.
One common theme is the exploration of power dynamics. Aro is a very powerful vampire and Bella has her own unique allure and power, so how they interact in terms of power is often explored.
One key element is the power dynamic. Aro is a powerful vampire and Bella has her own allure. Their relationship often plays around this power imbalance. For example, in many stories, Aro is drawn to Bella's unique mind which he can't fully read. This creates an interesting tension.
One common plot element is the struggle against their different natures. Bella is often seen as more human - centered and Aro has his vampire ways. There might also be a plot about them trying to keep their relationship a secret from others in their respective worlds. Another element could be the jealousy or interference from other characters who don't approve of their relationship.
One possible plot could be that Bella's discovery of being Aro's twin sister completely changes the dynamic in the Twilight world. Maybe she has some of Aro's powers, like the ability to read minds to an extent. This could lead to her being a target for other vampires who fear her new - found powers and connection to the Volturi.
Another plot twist could be that Aro has some grand plan for Bella that goes against what she wants. For example, he might want her to marry a certain vampire from his coven to strengthen their family's power, but Bella is in love with Edward. This would create a huge conflict between her loyalty to her new - found family and her love for Edward and the Cullens.