Well, it could be a very tense encounter. Anakin has his own complex history with Obi - Wan. His meeting with Obi - Wan's son might be filled with a mix of emotions. Maybe he would see some of Obi - Wan in the son and be both resentful and nostalgic at the same time.
If Anakin killed Obi Wan, it could have a domino effect. Anakin's relationship with other characters would likely change. Maybe the Jedi Order would crumble faster, and the Sith would gain more dominance. It's a fascinating 'what if' scenario to explore in fanfiction.
In some fanfictions, the relationship could be one of mentorship. Despite their initial differences, Anakin could recognize the potential in Obi - Wan's son. He could teach the son things that Obi - Wan couldn't, using his own unique experiences. And the son could provide Anakin with a sense of purpose and a new connection to the Jedi way, helping Anakin to move away from his dark past.
In many fanfictions, Obi - Wan might use his deep knowledge of the Force. He could reach out to Anakin through a Force - bond, calming his inner turmoil and guiding him away from the dark side. For example, he might remind Anakin of their past together, their training, and the values they once held dear.
One common theme is loyalty. Their relationship was based on loyalty in the Jedi Order, but that loyalty gets tested as Anakin starts to turn to the dark side. Another theme is mentorship. Obi - Wan was Anakin's mentor, and fanfictions often explore how that mentorship influenced Anakin's growth and downfall.
There are indeed such fanfictions. Some of them focus on the deep bond between Anakin and Obi - Wan and re - imagine it in a different way. But these are mainly for the enjoyment of fans who like to explore alternative storylines and character dynamics within the Star Wars universe. Keep in mind that the official Star Wars story doesn't go in this direction.
The Sith, definitely. They are always the main antagonists in the Star Wars universe, and in this fanfiction, they would be the ones trying to keep Anakin on the dark side. Palpatine, in particular, would be a major antagonist as he was the one who manipulated Anakin in the original story.
One great storyline could be Anakin and Obi - Wan teaming up against a new Sith threat that is more powerful than they initially thought. They have to put aside their differences and combine their skills, with Obi - Wan's calm and calculated approach and Anakin's raw power. Another could be a pre -quel type of fanfiction where we see their early days of training together in more detail, like how they overcame certain challenges during their training sessions.
One common theme is the exploration of their unspoken bond. In the movies, they have a deep connection, and in fanfiction, it can be turned into a more romantic or homoerotic bond. Another theme could be the conflict between their duties and their feelings for each other.
Sure, in the world of Star Wars fanfiction, the possibilities are endless. Since the Star Wars universe has such a large and dedicated fan base, there are bound to be some stories where Obi - Wan is Anakin's twin. Writers might explore how their Force - sensitivities interact differently as twins. Maybe they would have a special way of communicating through the Force that is unique to their twin relationship. Also, it could add a whole new layer of drama to the story, especially when Anakin starts to turn to the dark side. How would Obi - Wan, as his twin, react?