In the future setting, they could face new challenges that force them to reevaluate their relationship. For example, if they are in a situation where they have to choose between different factions in the future. This might cause some tension initially, but as they work through it, they learn to trust each other more deeply. They might also start to see each other in a new light, as they both grow and adapt to this new future environment.
One possible plot could be that Anakin and Obi - Wan find a time - traveling device in the Jedi Temple. When they travel to the future, they are shocked to see the remnants of the Jedi Order. They meet new Force - sensitive individuals who have formed a resistance against a new dark side threat. Anakin, having redeemed himself in the past, uses his experience to train these new Force - users, while Obi - Wan tries to figure out how the Jedi Order fell so far and how to prevent it from happening again in this new future timeline.
In a fanfic where they go to the future, they might be shocked by the advanced technology. Maybe they see flying cars and buildings that touch the sky. Anakin could be intrigued by new forms of lightsaber combat, if they still exist. Padme might be amazed by the new political systems and how society has evolved in terms of equality.
There's the theme of trust. In a lot of Anakin and Obi - Wan fanfic, their trust in each other is either strengthened or tested. Another theme is the idea of destiny. How Anakin's destiny as the Chosen One and Obi - Wan's role in it are explored. And the theme of sacrifice. Fanfics might show how they are willing to sacrifice for each other, which is a big part of their relationship.
Well, for Anakin, his first reaction in the future could be one of confusion and a bit of awe. He'd see things he couldn't even have imagined in his wildest dreams. His mechanical parts might start acting up due to the different technology around. Obi - Wan would be like a sponge, soaking up all the new information. He'd be comparing this new world to the Jedi teachings and the past he knew. Padme would be fascinated by the new architecture and the way people interact. She'd start asking questions right away, trying to piece together how this future society came to be. And all three of them would be a bit disoriented at first, but their different personalities would drive them to explore and understand the future in their own ways.
Another theme is loyalty. They are master and apprentice, and their loyalty to each other is often tested. In some fanfics, they face situations where they have to choose between their loyalty to the Jedi Order and to each other. This can lead to some really intense storylines.
One common theme is betrayal. Anakin's actions, often related to his turn to the dark side, are seen as a betrayal of Obi - Wan's trust. This creates a deep sense of hurt in Obi - Wan.
A typical 'obi wan anakin fanfic' often has their strong bond as a key element. It shows how they rely on each other in battles and in the Jedi Order. Another element is their different personalities. Obi - Wan's calmness contrasting with Anakin's impulsiveness.
The theme of friendship and love is also prevalent. It's not always romantic love, but a deep, abiding love that encompasses friendship, respect, and a connection that is unique to them. These fanfics explore how this love can withstand the trials and tribulations that come their way, whether it's battles, political intrigue, or Anakin's inner demons.
To develop Anakin's character, start with his disillusionment with the Jedi. He believes they have failed him, so his turn to the dark side seems like a way to gain the power he thinks he needs. In the Mustafar part of the fanfic, he can be shown as more impulsive and less in control of his emotions. Obi - Wan, on the other hand, can be developed as a character who is still holding onto hope that Anakin can be redeemed, but is also ready to do what is necessary to protect the galaxy.