Another plotline could revolve around a conflict within their group, and Bella and Esme have to work together to resolve it. Their bond as mates would be tested and strengthened through this. They might have to face opposition from other characters who don't understand their relationship.
Another plot could be that they are on opposite sides of a conflict initially. But as they realize they are mates, they have to find a way to reconcile their differences and work together. This could involve a lot of internal struggle for both of them as they deal with loyalty to their respective sides and their new - found bond.
Well, in such a fanfic, it could explore a unique bond between Bella and Esme. Maybe it delves into how they support each other in the strange world they are in. It might show their interactions and how they become close mates, sharing secrets and having deep conversations.
Perhaps in the fanfiction, Bella has a life - threatening situation and Carlisle, in his attempts to save her, becomes overly involved and his feelings cross a line. Esme, being the perceptive one, notices the change in Carlisle's behavior towards Bella. This could then set off a chain of events where the Cullen family has to choose sides or work to reconcile Carlisle and Esme.
Perhaps there is an external threat to their mateship. A powerful villain could be trying to break them apart for some reason, like using magic or blackmail. So, they have to fight against this threat to stay together.
In this fanfiction, the relationship could start with a simple attraction. Esme might be drawn to Bella's unique human - turned - vampire essence. As they become mates, they could travel together, exploring different parts of the world. Along the way, they encounter other supernatural beings. Their bond is tested when Bella is put in danger, and Esme has to use all her strength and wits to save her. This experience deepens their relationship and they become even closer, vowing to always protect each other.
A plotline might involve Bella having to choose between different aspects of her relationships with Jasper and Emmett. For example, Jasper could offer her a more cerebral and controlled relationship, while Emmett might represent a more passionate and physical connection. Also, they could all be on a journey to discover more about the origin of their unusual mating bond.
One possible plotline could be that they are brought together by a mysterious force. They have to figure out why they are mates and what it means for their future. Another could be that they are from different vampire clans and their relationship causes a rift between the clans. They then have to find a way to reconcile the clans while maintaining their relationship.
A plotline might involve Naruto traveling back in time and meeting Kushina when she was young. They could start as friends and gradually fall in love. Or perhaps there's a prophecy that links them together, and they have to fulfill it, which leads to their mating. There could also be a situation where a powerful enemy forces them to work closely together, and that closeness turns into a deeper relationship.
The bond between them is special. Since Bella is a human - turned - vampire, Esme can relate to her transformation journey in a way. Esme's nurturing nature towards Bella is also a key aspect. She protects and guides Bella, and Bella respects and admires Esme. This mutual respect and the way they complement each other are unique to their bond.
One possibility could be that they form a strong bond like a family. They support each other in the challenges they face in the vampire world. For example, they might work together to protect their territory from other vampires. They could also share their different experiences and knowledge, like Alice's visions helping them prepare for future events.