Put them in situations where they have to rely on each other's skills. Maybe they are trapped in a dangerous Sith - created maze or on a planet with deadly threats. As they work together to survive, they start to see each other in a new light, and their relationship changes from pure hatred to a more complex mix of emotions.
Their relationship can be developed through flashbacks. For example, showing memories of Anakin and Ahsoka's time as master and apprentice, and then contrasting it with their current hostile stances as Ahsoka and Darth Vader. This can add depth to their interactions.
Dialogue is key. Have them engage in deep, philosophical conversations about the Force, power, and the choices they've made. Darth Vader might try to tempt Ahsoka to the dark side, or Ahsoka could try to appeal to the good in him. Through these exchanges, their relationship can evolve.
The relationship could start with the female stormtrooper showing great combat skills that catch Darth Vader's attention. He then begins to give her more difficult tasks, and in the process, they develop a mutual respect. For example, she could be the only one in her unit to survive an ambush, and Vader sees her determination.
Well, in Darth Vader and Ahsoka fanfiction, the dynamic between them can be really interesting. Ahsoka knew Anakin, and now facing Darth Vader, she has this internal struggle. Fanfic writers may show how she grapples with the fact that the person she once looked up to is now a Sith. And Vader, he may have some remnants of his feelings for Ahsoka from his Anakin days, which could lead to some very emotional and action - packed scenes in the fanfiction.
It could explore their relationship by showing the contrast between their current selves. Ahsoka is a free - thinking Jedi - like figure, while Vader is a servant of the Emperor. Their relationship could be one of enmity, with Ahsoka seeing Vader as a fallen hero and Vader seeing her as a nuisance to the Empire.
If Ahsoka joins Vader in fanfiction, their relationship would become extremely complex. At first, it would likely be filled with anger and resentment from both sides. Vader might see her as a reminder of his past failure as Anakin, and Ahsoka would see him as the fallen Anakin she once knew.
Well, it would be a very strained relationship. Darth Vader is on the dark side, and Ahsoka is a former Jedi. If she's pregnant, Vader might see the child as a tool or a weakness. But there could also be a glimmer of the old Anakin in him that might be conflicted. Maybe he would try to manipulate Ahsoka through the pregnancy.
Another way to develop their relationship is through a shared secret. Maybe they both know something about the Force that the rest of the galaxy doesn't. This secret brings them together in a way that defies their initial roles as Rebel and Sith. They have to communicate and collaborate to keep this secret, and in the process, their relationship evolves from pure hatred to something more nuanced, like a begrudging alliance with a hint of mutual curiosity.
In some fanfictions, their relationship is very antagonistic. Darth Vader sees Ahsoka as a reminder of his failed Jedi past and wants to destroy her. Ahsoka, on the other hand, is determined to stop Vader's evil deeds.
In some fanfictions, their relationship develops through a series of battles. Each encounter makes them more aware of the other's strength and weaknesses. For example, Vader might initially see Ahsoka as a mere nuisance but as they fight more, he starts to respect her skills, which in turn makes him question his own choices more deeply. And Ahsoka, she begins to understand the depth of Vader's fall and feels a sense of sorrow for him.
One way is to have them communicate through the Force in a non - traditional way. Instead of direct conversations, they exchange emotions and memories. For example, Ahsoka could send Vader memories of their time together as master and apprentice, trying to stir the Anakin within him. Another unique exploration could be through dreams. They both have nightmares or dreams related to each other, which could reveal their true feelings and fears about their relationship.
Another way is through the exploration of their family connection. Vader already knows he is Leia's father, but in fanfiction, he could be conflicted about how to handle this knowledge. Leia, on the other hand, could start to suspect something about their relationship. This internal conflict for both of them could drive the development of their relationship. They would still be on opposite sides in terms of the Rebellion and the Empire, but their personal relationship would be evolving in a very interesting and character - consistent way.