There's also 'Female Lelouch: Time's Redemption'. In this fanfiction, the female Lelouch's time travel leads to some really unexpected alliances. For example, she teams up with some characters that were previously her enemies in the original timeline. It's full of plot twists and turns.
One popular 'Code Geass female Lelouch fanfiction' is 'The Empress Lelouch'. It presents an interesting take on Lelouch as a female character, with unique plot developments centered around her rise to power and how she manipulates the political situation in the Code Geass universe.
There is a fanfic called 'Lelouch's Time Travel Adventure'. In it, Lelouch travels back in time to a point before the start of the series. He uses his knowledge of the future to try and prevent the events that led to the sad state of the world in the original story. It has some really cool moments where he outsmarts his enemies using future knowledge, and the way the author writes his internal monologues is very interesting, making it a great read for Code Geass fans.
One common theme is redemption. Since she's traveling back in time, the female Lelouch often tries to right the wrongs she did in the original timeline. Another theme is the exploration of different relationships. For instance, how her relationships with other characters change when she has the knowledge of the future.
Time travel can greatly expand Lelouch's character development. When he travels back in time, he gets a second chance. This makes him more cautious as he doesn't want to repeat the same mistakes. For example, he might be more careful in his relationships with Suzaku and others, knowing how things turned out before.
Perhaps they travel to a time when the Geass power was first created. Lelouch could try to change the nature of the Geass power to make it less destructive. This would involve him interacting with the original creators of Geass and trying to persuade them to modify it. Meanwhile, Nunnally could be learning about the history of their world from a different perspective, which would help them in their future plans.
Lelouch's character would likely become more cautious. Knowing the consequences of his past actions through time travel, he might think twice before making rash decisions. For example, he might not be as quick to use his Geass power without considering all the long - term effects.
A good Code Geass Lelouch fanfiction is 'Lelouch in a Parallel Realm'. In this story, Lelouch is transported to a parallel world where the power dynamics and politics are different. He has to adapt and use his wits in new ways. 'Code Geass: Lelouch's Alliances' is also great. It shows Lelouch forming unexpected alliances and how those relationships shape his journey. And 'The True Ending of Lelouch' is a fanfiction that tries to give a more satisfying and conclusive end to Lelouch's story.
One key feature is the gender - swapped perspective. It allows for a fresh look at the character of Lelouch. For example, in some fanfictions, the female Lelouch might use her charm in different ways compared to the male version to influence those around her.
There is a fanfiction titled 'CC and Lelouch's Unseen Bond'. It delves deep into their relationship, exploring how they support each other through various challenges in a way that's both heartwarming and engaging. It's quite long but worth the read as it really develops their characters well. The author has a great understanding of the Code Geass universe and how these two characters interact within it. There are also some beautifully written emotional scenes that add depth to the story.
One great 'Code Geass Lelouch Immortal' fanfic is 'The Immortal Lelouch's New Reign'. It explores Lelouch's immortality in a world where he has to deal with new threats and political intrigue. The story does a great job of keeping the characters' personalities intact from the original series.