Perhaps a story where the Seven Swords of the Mist are scattered across different dimensions in the Naruto universe. A group of ninja, including some well - known characters like Naruto and Sasuke, team up to travel to these dimensions, retrieve the swords, and use their combined power to defeat a powerful new threat that is emerging from the shadows, endangering all of the ninja world.
A fanfiction could center around a character who is a descendant of one of the original wielders of the Seven Swords of the Mist. This character has a natural affinity for the swords but must first prove themselves worthy in a series of trials set by their clan elders. Along the way, they meet other Naruto characters and form alliances to protect the swords from being misused.
You could have a character who is an outsider to the Mist Village but is drawn to the power of the swords. They manage to steal one of the swords and then become a target for both the Mist ninja and other rogue elements in the Naruto world. This would create a lot of action and chase scenes as the character tries to evade capture while also learning to harness the sword's power.
In such a fanfiction, Naruto might obtain all seven swords through a series of epic battles and adventures. Maybe he defeats the previous owners one by one in honorable combat and claims the swords as his trophies. Another possibility is that he stumbles upon a hidden treasure trove where all the swords are stored, and by some twist of fate, he becomes their rightful wielder.
One idea could be that Naruto is sent on a mission to the Hidden Mist Village and gets separated from his team. He then has to adapt to the Mist Ninja ways to survive. He might learn their unique jutsu, like some water - based techniques, and form unexpected alliances with Mist Ninja who admire his determination.
One great fanfiction is 'The Seven Swordsmen's Redemption'. It focuses on the backstories of the swordsmen and how they might find a new path in a post - war world. The character development is really well - done.
One common theme is power. The Seven Swordsmen are known for their great power, and fanfictions often explore how they got that power, how they use it, and how they compare to other powerful characters in the Naruto world. Another is loyalty. Whether it's loyalty to their village or to each other, it's often a central theme.
A fanfiction could revolve around a young ninja who is born with both the Sharingan and the Rinnegan. He has to hide his powers from the world as he is hunted by those who want to use his powers for evil. As he grows, he meets Naruto and they form an unlikely alliance. Together, they train to master his unique abilities and fight against the forces that seek to destroy them.
One idea could be a crossover where Naruto, with his Mokuton abilities, somehow ends up in the Avatar universe and meets Azula. Maybe he tries to use his Mokuton to counter her firebending in a big battle. Another could be a story where Azula discovers a way to use Mokuton-like powers through some dark magic and Naruto has to stop her from misusing it.
One idea could be a story where Naruto somehow acquires the Rinnegan and combines its powers with the Susanoo. Maybe he has to face an extremely powerful enemy that can only be defeated by this new, super - powered combination. He could start by accidentally awakening the Rinnegan during a battle and then discovers that he can merge it with his Susanoo - like form.
One idea could be that Fuu discovers a hidden power within Naruto's Rinnegan that can open a portal to a different dimension filled with ancient ninja secrets. She then teams up with Naruto to explore this new world and face the challenges within.
One idea could be a story where a character discovers a way to combine the powers of the Rinnegan and Sharingan. For example, they might be able to use the Sharingan's precognitive abilities to enhance the Rinnegan's control over the six paths. This could lead to new and unique jutsu that no one has ever seen before.