Well, a popular lelouch crossover fanfiction is the one with 'Death Note'. Imagine lelouch getting his hands on the Death Note. He could use it in combination with his Geass to achieve his goals in a very different and dark way. The power struggle between Light and lelouch would be intense as they both have different means of achieving what they consider 'justice'. Another example is a crossover with 'Naruto'. Lelouch could end up in the Hidden Leaf Village and use his intelligence and Geass to either help or disrupt the ninja world. He might form alliances with some of the ninja clans or try to take over the village using his unique abilities.
One interesting 'lelouch lamperouge crossover fanfiction' could be a crossover with the 'Code Geass' universe and the 'Fullmetal Alchemist' world. In this story, Lelouch might use his Geass power to navigate the complex moral and alchemical dilemmas in the 'Fullmetal Alchemist' world. Another could be a crossover with a superhero universe, where he teams up with heroes to fight a common enemy, using his strategic mind and Geass.
A crossover might involve characters from different universes coming into the Code Geass world. Say, a character with superpowers from a superhero - themed anime enters the story. This could create a lot of chaos as Lelouch tries to either use this new element to his advantage in his fight against Britannia or has to deal with the unforeseen consequences of this new presence.
One interesting lelouch fanfiction could be the ones that explore an alternate universe where Lelouch doesn't die. It gives a whole new perspective on his character development and how he would interact with the world and other characters in a different scenario.
One interesting 'lelouch lemon fanfiction' could be those that explore alternative universes where Lelouch has different relationships. For example, some might depict him in a more romantic and intense relationship with a particular character, delving into their emotional and physical connection in a unique way.
One interesting 'lelouch x clovis fanfiction' could be about their complex relationship in an alternate universe where they have to work together to save their kingdom. In this story, they might put aside their differences and learn to understand each other's motives.
In some 'lelouch and cc lemon fanfiction', the story could revolve around their shared dreams and how they strive to make those dreams come true while also falling in love. It could explore their inner thoughts and emotions in great detail as they grow closer.
There might be a fanfic where Lemon is a symbol or a magical object. For example, Lelouch, in his quest for power and justice, is guided by C.C. to find the Lemon. This Lemon could hold the key to changing the fate of the world they live in. It would involve a lot of strategic thinking and character development.
One possible plot could be Lelouch, as a girl, using her new identity to infiltrate an all - female organization that was previously off - limits to him as a male. She could use her charm and wits in ways that are different from when she was male, creating unique storylines.
Light Yagami from Death Note could be a great character for a crossover. Both he and Lelouch are highly intelligent and are willing to do whatever it takes to achieve their goals. A meeting between them would be a battle of wits, with each trying to outmaneuver the other, either to use the other's power for their own benefit or to eliminate a potential threat.
A Bendy and Undertale crossover fanfiction can also be really cool. Picture Bendy ending up in the Underground. He could interact with characters like Sans and Papyrus. Maybe Bendy's inky form would be a mystery to the monsters there, and they'd have to figure out how to deal with him. It could be a story full of humor and unexpected friendships.