One possibility in this fanfiction could be Naruto somehow getting involved with the power of the 7 Wizarding Swords. Maybe he is transported to a world where these swords exist and has to learn to use their magic in his own unique ninja way. He could combine his chakra with the magic of the swords to create new and powerful attacks.
The plot could be that Naruto is summoned to a realm where the 7 Wizarding Swords are of utmost importance. He is mistaken for a prophesied hero who is supposed to retrieve the swords and restore balance. So, he embarks on a journey to find each sword. Along the way, he uses his ninja skills like stealth and agility to overcome the guardians of the swords.
The use of legendary swords in Naruto fanfiction can also change the power dynamics between characters. A character who might not be as strong in the original series could become a formidable force with the aid of a powerful sword. Say, a side character gets hold of the Kubikiribocho and suddenly becomes a key player in battles, creating new and interesting storylines.
In some Naruto fanfictions, Naruto might gain the ability to conjure swords through a special training arc. Maybe he discovers a new chakra technique that allows him to materialize swords from his chakra. For example, if he combines his wind - style chakra with some ancient sealing jutsu he learned, it could result in sword - conjuring ability.
They're often made more powerful. For instance, the Samehada might be shown to have even greater absorption abilities in fanfic. It could absorb not just chakra but also other forms of energy.
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 possible scenario is that Naruto travels to a hidden village that specializes in sword - based ninjutsu. There, he learns their techniques and gains the ability to conjure swords. Another could be that he is cursed by an evil ninja, but as a side - effect of the curse, he can now conjure swords. He then has to learn to control this new power.
Sasuke is often a popular character in these fanfictions. His natural combat skills and brooding personality can be well - paired with the use of dual swords. He could be portrayed as a master swordsman, using his dual blades to take on powerful opponents in new and exciting ways.
Naruto could potentially gain the power of mind - reading magic. This would be a huge advantage in both the wizarding war and in his interactions within Konoha. He could also gain the ability to transform into magical creatures, which would give him new forms of attack and defense. Another possibility is that he gains the power to nullify magic, which would make him a key player in the fight against wizards who use dark magic.