In 'kingdom hearts birth by sleep crossover fanfiction', the exploration of alternate universes can be really fascinating. Writers can create versions of the 'Kingdom Hearts' world where different events have occurred. This could change the relationships between characters. For example, if a certain keyblade wielder had made a different choice in the past, how would that affect the present situation? And how would they interact with characters from other crossovers in this new universe?
A cool concept might be the fusion of different storylines. Maybe the fanfiction combines the story of 'Kingdom Hearts Birth by Sleep' with another related or even unrelated game's story. This can lead to unique plot twists and character developments. For instance, if it crosses over with a Final Fantasy story, we could see how the magic systems of both interact and how the characters adapt to the new rules.
Another interesting concept is an OC that has a special connection to the darkness but is trying to fight it. This OC could start as a character who is feared by others in the 'Kingdom Hearts' universe because of their association with the dark side, but as the fanfiction progresses, they prove their worth and loyalty to the light. Maybe they were experimented on by the villains, which gave them this connection to the darkness.
One interesting concept could be the crossovers with other popular franchises. For example, a crossover with Final Fantasy might bring unique character interactions. The different worlds in Kingdom Hearts already have a diverse range of characters and settings, and when combined with elements from other stories in fanfiction, it can create really engaging scenarios. Maybe a character from Kingdom Hearts visits a world based on a different game or movie, and has to adapt to new rules and cultures.
One interesting concept could be the exploration of different worlds colliding. For example, the Heartless from Kingdom Hearts might enter a world from another franchise in the crossover. This could lead to unique battles and interactions between characters that wouldn't happen in the original Kingdom Hearts universe.
One interesting concept could be a crossover with the Final Fantasy series. You could have characters from Kingdom Hearts interact with iconic Final Fantasy characters in a new world. For example, Sora and Cloud could team up to fight a new threat. Another concept could be a crossover with Disney's Aladdin. Picture Sora and Aladdin going on a new adventure together in the world of the Magic Carpet. A third concept might be a crossover with the Legend of Zelda. Link could join forces with Sora to save both their worlds from a common enemy.
Aqua is popular as well. Her loyalty and her own journey in 'Kingdom Hearts Birth by Sleep' make her an interesting character for crossovers. She could be paired with characters from different franchises in fanfiction. For example, if she were to cross over with a character from a magical girl anime, her strong will and magical abilities could lead to some really engaging storylines.
Well, how about a story where the Organization XIII members from Kingdom Hearts: Birth by Sleep infiltrate the Naruto world? They could try to manipulate the different ninja villages, causing chaos. Naruto and his friends would have to figure out their motives and stop them. Meanwhile, some of the Naruto characters might start to develop abilities similar to the Organization XIII members. For instance, Sakura could gain some sort of power related to Xion's ability to copy others' forms, but in a way that is unique to the Naruto universe's ninja skills.
Some interesting concepts include alternate universes where the characters have different roles or relationships. For example, Sora might be a villain instead of a hero. Another concept could be exploring the backstories of minor characters in more depth, like how they came to be in the different worlds.
It mainly follows the stories of Ventus, Terra, and Aqua. They are Keyblade wielders. Their adventures involve battles against the forces of darkness, exploration of different worlds, and their individual quests for self - discovery and growth within the complex Kingdom Hearts universe.
The plot mainly focuses on the backstories of the key characters in the Kingdom Hearts universe before the events of the main games. It delves into their relationships, their quests, and how they are all connected to the overall Kingdom Hearts story.
In Kingdom Hearts Darkness fanfiction, there are often concepts related to the origin of the darkness. Some stories might explore whether the darkness was always there or if it was created by some ancient force. There could also be the idea of a character having to master the darkness instead of simply fighting against it, like using the power of darkness in a controlled way to fight even greater threats in the Kingdom Hearts cosmos.