Love and loyalty are common themes. Since CC and Lelouch have a complex relationship in the original series, fanfictions often explore different aspects of their potential love for each other and their loyalty towards their respective goals. Another theme is power and sacrifice. As they both are involved with the power of Geass, many fanfictions deal with how they sacrifice or use their power in relation to each other.
Romance is a very common theme. Writers often create scenarios where the reader has a romantic relationship with the cc. Another common theme is adventure, where the reader and the cc go on exciting adventures together.
One common theme could be adventure. Maybe Zero and Cc are on some sort of quest together. Another theme might be friendship development, showing how their relationship grows over time.
The exploration of their relationship. It's not just about the obvious romantic or partnership aspects. It can also be about how they understand each other on a spiritual level. They both have complex pasts and the fanfics can really dig into how they come to terms with each other's demons.
One common theme is loyalty. They often show how nightmare freddy and nightmare bonnie are loyal to each other in the spooky nightmare world. Another theme is survival. Since it's a nightmare setting, they have to work together to survive against various threats.
There's also 'Nightmare Entanglement'. This fanfiction focuses on the power dynamics between them. It has an interesting plot where they have to team up against a new threat in the nightmare realm. The way the author describes their interactions is quite engaging.
One popular lelouch x cc fanfiction might be those that explore their relationship post - series. Some stories focus on how they navigate a new world together after all the chaos in the anime. For example, there could be a story where they travel around the world incognito, sharing their thoughts and feelings that were unspoken during the main plot.
Some popular Naruto x CC fanfictions include 'Naruto and CC: Worlds Collide'. This story has a really interesting plot where the two characters from different universes must find a way to get back to their respective worlds while also dealing with the chaos that ensues when their worlds start to merge. 'CC's Adventure in Naruto's World' is another good one. Here, CC enters Naruto's world and gets involved in the ninja politics and battles, all while trying to find a way home. And 'Naruto x CC: The Unexpected Team - up' is about how they team up against a powerful foe that neither could face alone.
The chemistry between them in the original work is also a big factor. Writers in fanfics can expand on that chemistry. For example, they can show how Lelouch's strategic mind and CC's mysterious nature interact in new and exciting ways. They can also create new storylines that build on the unresolved tension between the two characters, which attracts a lot of readers.