The time - traveling could rewrite the history of the Force. With Anakin not falling, the balance of the Force could be maintained in a different way. The Sith might be weakened to the point of near - extinction much earlier. The Jedi teachings could also evolve differently as Anakin and Obi - Wan bring back new insights from the past, leading to a more enlightened and powerful Jedi Order.
Their time - traveling could have a huge impact. If they prevent Anakin's fall, for instance, the entire Galactic Empire might never come to be. The Sith's plan for galactic domination would be severely disrupted. There would be no need for a Rebel Alliance as the Jedi Order would likely remain strong and keep the peace.
It could also affect the relationships between different species in the Star Wars universe. For example, if Anakin and Obi - Wan change certain events, it might lead to different alliances being formed. Some species that were oppressed in the original timeline could gain more power and influence. Also, the technology development might be different. Maybe the Death Star would never be built without the Empire's rise.
A possible plotline is that they go back in time and get involved in an ancient Jedi - Sith war. They could use their knowledge from the future to tip the balance in the Jedi's favor. They might also meet their ancestors or past Jedi heroes and learn from them, which in turn helps them in their fight against the dark side in their own time.
The defeat of Obi - Wan by Anakin would have far - reaching consequences. For one, Anakin's reputation would grow, whether in a positive or negative light depending on who you ask. The Clone Wars might take a different turn as Anakin's newfound power and status would influence his decisions. His victory could also inspire other young Jedi or Force - sensitives to follow a more aggressive or independent path, challenging the traditional Jedi teachings. This could potentially lead to a split in the Jedi Order, with some following Anakin's example and others sticking to the old ways.
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.
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.
The impact would be far - reaching. For the Jedi, Obi - Wan's death at Anakin's hands would be a major blow to their morale. His teachings and wisdom were highly valued. Without him, the younger Jedi might lose their way. In the greater Star Wars universe, it could change the course of the war. Anakin's actions could lead to different alliances being formed. Some planets might side with the Sith out of fear or a belief that they are the new power. It would also affect the relationship between the Force - sensitive characters. Those who were close to Obi - Wan might seek revenge, while others might try to redeem Anakin.
Time travel would likely make Obi - Wan more self - reflective. Seeing different versions of events and his own actions from different time periods would force him to reevaluate his beliefs and decisions. For example, if he goes back to his training days, he might realize things he could have done differently to be a better Jedi.
Maybe Anakin is fully consumed by the dark side. The dark side often twists a person's mind, and he might see Obi - Wan's child as a threat to his own power or position. So, in his warped state of mind, he decides to eliminate the child.
If Obi - Wan travels back in time, his character would become more self - aware. He would have the knowledge of his past mistakes and would be more cautious. For example, in his relationship with Anakin, he might be more empathetic from the start, understanding Anakin's insecurities better. This would lead to a different dynamic between them, and perhaps Anakin would not be so easily swayed by the Dark Side. Also, Obi - Wan would be more confident in his Jedi abilities as he has already seen the heights and lows of the Jedi Order in his own time.
His time - traveling could have a huge impact. If he changes something in the past, it could create a ripple effect. For instance, if he stops Anakin from turning to the Dark Side, the whole Sith - Jedi dynamic in the galaxy would be different. There might not be an Empire, and the Jedi Order could have thrived without the purge.
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.