One possible scenario in a Naruto Keyblade fanfiction could be Naruto obtaining a Keyblade. He might use it in a unique way, combining his ninja skills with the power of the Keyblade. For example, he could infuse his chakra into the Keyblade attacks, creating powerful and unexpected combos.
The Keyblade origin story is quite complex. It is said to be a powerful weapon with deep connections to different worlds in some fictional universes. It has ties to ancient powers and prophecies. Essentially, it was created with a purpose that often involves the balance between light and darkness, and is wielded by chosen characters in their quests.
In a fanfiction scenario, Naruto as a Keyblade wielder might have a Keyblade design inspired by his ninja headband or the Nine - Tails. His skills as a ninja, such as his shadow clone jutsu, could be incorporated into his Keyblade fighting style. For example, he could send clones to attack from different angles while using the Keyblade to fend off opponents in close combat. He may also form alliances with other Keyblade wielders from different worlds, bringing his own sense of justice and loyalty to the group.
Yes, there are likely to be such fanfictions. The 'Harry Potter' and 'Keyblade' universes are both rich in their own elements, and fans often like to combine different fictional worlds in fanfiction. You can try to search for it on major fanfiction websites like FanFiction.net or Archive of Our Own.
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.
In this kind of fanfiction, the Keyblade could be a key (no pun intended) to unlocking new powers within Naruto. It could be linked to some ancient prophecy in the Naruto world. Maybe it was hidden there for a long time and only Naruto, with his unique spirit, can wield it properly. This could lead to a whole new arc in the Naruto story where he has to master the Keyblade while still dealing with his ninja duties.
I'm not entirely sure as it's a fanfiction, but it might involve crossovers. It could be that the story takes the ninja - like skills from Naruto and mixes them with the vampire - werewolf lore of Twilight, all while centering around the Keyblade. Perhaps the Keyblade has some special connection to the chakra in Naruto's world or the supernatural powers in Twilight.
Sora is one of the main characters. He's a brave Keyblade wielder. Riku is also important. They both play crucial roles in the events of the Keyblade War Story.
A plotline for a Naruto Keyblade fanfic could start with Naruto finding a strange Keyblade - like object during one of his missions. As he tries to figure out what it is, he accidentally activates it and is sent to a different realm. In this realm, he meets other Keyblade wielders who help him understand the power of the Keyblade. Meanwhile, back in the Naruto world, his friends are worried about his disappearance and start searching for him. Naruto then has to master the Keyblade and find a way back home while also dealing with any threats in the new world.
In fanfiction, the combination of Harry Potter elements with an Aqua Keyblade and Fire can create really interesting scenarios. It could be a story where Harry discovers a magical Keyblade that has the power of water (aqua) and is able to control fire as well. This might lead to new adventures and challenges for him, like facing off against dark wizards who are also after the power of this unique Keyblade.