A possible fanfiction is one that takes place in an alternate universe where the Geass powers have a different effect on the characters' relationships. In this lemon fanfiction, the characters' inhibitions are lowered due to the Geass, leading to unexpected romantic and passionate encounters. But remember, such fanfictions are often a creative and sometimes racy take on the original series.
One interesting Code Geass lemon fanfiction could be about Lelouch having a secret relationship with a new character in a romantic yet dangerous situation. It might involve them having to hide their feelings while still being involved in the complex politics of the Code Geass world.
One interesting Code Geass adult fanfiction could be those that explore alternative futures for the characters. For example, a story where Lelouch has to navigate a political landscape in his adulthood that was different from the original series. Another might be a story that focuses on the relationships between the characters as adults, like how Kallen and Suzaku interact in a post - war world.
One interesting Code Geass OC fanfiction could be about an OC who has the power to manipulate time in a different way than Lelouch's Geass. This OC might use their power to try and prevent some of the tragedies that occur in the original series. For example, they could stop the massacre at Shinjuku early on, which would change the course of the entire story.
One interesting fanfiction could be where Lelouch and C.C. go on a journey to find a lost relic. In this story, their relationship deepens as they face various challenges together. Another one might be a story set in an alternate universe where they are just normal students, and their relationship develops in a more peaceful setting. There could also be a fanfiction where they have to team up to fight a new enemy that threatens the world they live in.
One idea could be an OC who is a commoner but has a unique power that gets noticed by Lelouch. For example, the ability to manipulate sound waves which could be used for both stealth and attack. Another could be an OC from a foreign nation who has different moral and cultural values than the Britannians and Japanese, creating interesting conflicts. Or an OC who is a brilliant scientist working on a secret project that could change the balance of power in the Code Geass world.
One great fanfiction could be about Lelouch and CC going on an adventure outside of the main plot's battles. They might discover a hidden land where they have to rely on each other in new ways, deepening their bond. Maybe they find a magical artifact that only CC can understand, and Lelouch has to protect her while she figures it out.
One interesting Code Geass female OC fanfiction could be about a female OC who is a brilliant strategist. She might start as an unknown figure but quickly rises in the ranks of the Black Knights. For example, she could use her unique knowledge of modern warfare tactics from another world to give the Black Knights an edge. Another story could focus on a female OC with a special Geass power that she has to keep hidden from both the Britannian and Japanese sides. She struggles with the moral implications of using her power while also trying to survive in the chaotic world of Code Geass.
One interesting 'Code Geass Fanfic' could be about Lelouch having to face an unexpected new enemy that is immune to his Geass. It would add a whole new layer of challenge to his plans.
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.
Some fanfictions in 'Code Geass the Gamer' might explore the idea of in - game items or loot. The characters could find or earn items that give them an edge in the Code Geass world, such as a device that temporarily enhances their Geass range or a charm that protects them from mind - control attacks.
One idea could be a crossover with 'Attack on Titan'. The mechs in Code Geass could be used in the fight against the Titans. Another idea is a crossover with 'Fate/Stay Night'. The mages and their magic in Fate could interact with the Geass powers in Code Geass. A third idea might be a crossover with 'Fullmetal Alchemist'. The concept of equivalent exchange could be explored in relation to the Geass power's consequences.