Perhaps a story where Xion gets injured and Rixas has to take care of her while protecting her from approaching enemies. This would show his protective side towards her and also give room for some tender moments between them. They could also have deep conversations during this time about their hopes for the future in the Kingdom Hearts universe.
We can expect a lot of emotion. Sora is a character full of heart, and Xion has her own emotional baggage. When they meet, it could be a heart - wrenching moment as Xion may reveal her struggles. Sora, being the hero he is, would likely try to comfort her. They might also have a battle of some sort, either against a common enemy or due to some misunderstanding at first.
The 'bad love' might also be due to their own insecurities. Roxas and Xion both have their own issues regarding their existence. Roxas is a Nobody of Sora, and Xion has her own mysterious origin. These factors could lead to a relationship that is full of difficulties and could be considered 'bad' as in not a healthy, straightforward love. It could be a love that is constantly challenged by their own self - doubts and the expectations placed on them in the Kingdom Hearts world.
They are an interesting pairing because they both have complex backstories. Riku has his journey of dealing with the darkness within him, and Xion has her own identity issues being a replica. Their different experiences can create a lot of drama and tension in a fanfiction. When brought together, their stories can intersect in unique ways. For example, Riku could help Xion come to terms with her identity, using his own experiences of self - discovery.
It might also delve into their emotional bond. Since they have a complex history in the Kingdom Hearts series, the fanfiction could show them dealing with past traumas together. For example, Xion's struggle with her identity and Rixas' memories of his time as a Nobody could be explored in more depth, strengthening their connection in the story.
Writers often draw inspiration from the OC's backstory. If the OC is from a world full of ice, the Keyblade might have a frosty look with ice - like blades and a hilt that resembles a frozen crystal. They also consider the OC's personality. A more aggressive OC might have a Keyblade with sharp, jagged edges, while a calmer one could have a more elegant and streamlined design.
One good fanfiction could be 'Riku and Xion's Unlikely Bond'. It delves into how their personalities, which are quite different on the surface, start to complement each other as they face various challenges in the Kingdom Hearts world. They might initially clash due to Riku's brooding nature and Xion's more innocent yet determined self. But as the story progresses, they find common ground in their loyalty to their friends and their fight against the darkness. This fanfiction might also explore their individual growths as they grow closer to each other.
Well, a really exciting plot might involve characters from different worlds within the Kingdom Hearts universe who were previously thought to be lost or dead suddenly reappearing during the Keyblade War. They could bring with them new powers or knowledge that shakes up the whole conflict. For example, if a character from a long - forgotten world shows up with the ability to nullify certain Keyblade attacks, it would completely change the dynamics of the battles. There could be a race among the warring factions to either recruit this character or eliminate them. And as the story unfolds, we could see how the different Keyblade wielders' loyalties are tested in the face of this new threat or opportunity.
Well, in a Kingdom Hearts fanfiction where Sora meets Xion, it could lead to a powerful alliance. Xion has her own unique abilities, and together with Sora, they could be a force against the Heartless and other enemies. Sora might initially be cautious, but as he realizes Xion's true nature and her connection to him, they could start to trust each other. They may embark on a journey to discover more about the mysteries of the Keyblades and the hearts that are intertwined in their fates.