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.
A 'naruto dark keyblade fanfic' can be interesting because it allows for a lot of creativity. For example, the dark keyblade could bring out a different side of Naruto. Maybe he has to struggle with the corrupting influence of the dark power, which could lead to some intense internal and external conflicts. Also, it could introduce new villains or threats that are related to the keyblade's origin, adding new layers to the Naruto story.
In a Naruto Keyblade fanfic, the Keyblade could be integrated into the Naruto universe in an interesting way. For example, the Keyblade could be related to some ancient and forgotten Ninja art. Naruto, as the main character, could be the only one able to unlock the true potential of the Keyblade. This could create a whole new power dynamic in the series. He could use the Keyblade to open portals to other dimensions, bringing in new allies or enemies. And his friends like Sasuke and Sakura could also be involved, either by being amazed at Naruto's new power or by getting their own Keyblades in some way.
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.
Finding a great 'naruto dark keyblade fanfic' can be a challenge. One way to start is to join Naruto or Kingdom Hearts (since the keyblade is from that series) fan forums. Ask the members there if they know of any such fanfics. Another option is to look at the works of well - known Naruto fanfic authors and see if any of them have dabbled in this concept. It's possible that there are some hidden gems out there waiting to be discovered.
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.
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.
Maybe through some kind of magical encounter. For instance, he could stumble upon a portal that leads to a world where the Keyblade exists and be chosen by it. It could be that his strong will and desire to protect his friends are what draw the Keyblade to him.
Well, Naruto getting a Keyblade would be a wild turn. Firstly, the Keyblade has a certain magic to it. Naruto's world is mainly about chakra, but with a Keyblade, he could introduce a new form of energy. He might be able to combine chakra with the power of the Keyblade. In terms of his friends, they would be both amazed and a bit envious. Sasuke, for instance, would see it as another way Naruto is getting stronger. And Naruto would have to learn how to wield it properly. He might start training with it in the same way he did with his rasengan, trying to master all its functions and forms.