One challenge could be Luke's pre - existing ideas. He has already started his Jedi training with Obi - Wan and Yoda. So, he might be resistant to some of Ahsoka's new teachings. Another challenge could be Ahsoka herself. She has her own emotional baggage from her past, which might interfere with her ability to train Luke effectively.
One great fanfiction with this theme is 'Leia's Discovery' on FanFiction.net. It really delves into the moment when Leia first finds Luke in a very creative way, exploring their relationship and the emotions that come with it.
There could be a fanfiction where Luke and Leia explore their relationship as siblings in more depth. For example, they could have heart - to - heart conversations about their parents and how their upbringing affected them. This would add more emotional depth to their characters in the fan - created story.
In non - lemon fanfiction, Luke is often portrayed as a brave and determined Jedi. He is shown to be constantly striving to do what is right in the Force. Leia, on the other hand, is depicted as a strong - willed leader. She is fearless in the face of danger and is a great strategist. Their relationship is usually centered around their family bond, be it as siblings or as comrades in the fight against the dark side.
Ahsoka's training could greatly enhance Luke's skills. She has her own unique combat and Force knowledge. For example, her experience with different forms of lightsaber combat can be passed on to Luke. This may help Luke become more versatile in battles and also deepen his understanding of the Jedi ways.
A different take could be that the pregnancies are a result of some sort of experimental medical procedure gone wrong. Luke and Leia then have to deal with the physical and emotional toll of an unexpected pregnancy. They may seek out different healers and medical experts across the galaxy to ensure the health of themselves and their babies, all while still being heroes and dealing with the threats to the galaxy.
You can start by looking on popular fanfiction websites like Archive of Our Own. They have a wide range of stories, and you can search specifically for Luke and Leia fanfiction using the search bar. You can also filter the results based on factors like rating and length.
Often, Palpatine can still be a main antagonist even in time travel fanfiction. If Luke and Leia travel back in time, he might sense their presence and try to stop them from changing things that would undermine his power. Another could be Darth Vader if they travel to a time when he was still firmly on the dark side. He would be a powerful foe for them to face.
Luke is often very well - written. Fanfiction authors can explore his journey with the Force in more detail. They can show his growth from a naive farm boy to a powerful Jedi in a more nuanced way.
A third plotline could be set in an alternate universe where Luke and Leia meet under different circumstances. For example, they could meet as children before they were separated. This would completely change the dynamic of their relationship and lead to a whole new set of adventures and character developments.