Who could be the main character in 'a double eddged sword fanfic'?

It could be about a character who has a power or situation that is both a benefit and a hindrance, like a magic sword that gives great strength but also corrupts the user over time.

Another possibility is that it's a minor character from the Naruto series who gets a chance to shine in this fanfic. They might have found the sword by accident and now they are determined to make it their own, facing many obstacles along the way as they are not as well - known or powerful as some of the main characters in the original series.

Naruto himself could be a great main character. Imagine Naruto finding the Sword of Tengu during one of his adventures. He could struggle at first to understand the sword's power, but with his determination, he would eventually master it and use it to protect the village in a new and exciting way.

Natsu could be the main character. His impulsive nature might lead him to find the cursed sword first. He would initially think it's just a powerful weapon he can use against his enemies, but then he realizes the sword is slowly corrupting him. This would set him on a journey to get rid of the curse while still trying to protect Fairy Tail.

Naruto himself could be the main character. Imagine him finding the holy sword and using it in combination with his ninja skills. It would make him even more powerful and add a new dimension to his battles.

Maybe an outcast ninja. This person has always been on the fringes of the ninja society. Discovering the neglected sword gives them a chance to prove themselves. They could be someone with a lot of untapped potential who uses the sword to rise above the neglect they've faced.

A master of both aikido and kenjutsu could be the main character. This person has reached a level where they can use the principles of aikido to neutralize a kenjutsu attack. They might be a reclusive figure, but after this incident, they are drawn back into the martial arts community to share their knowledge or to face an old enemy who is threatened by their skills.

A powerful demon could be the main antagonist. This demon senses the power of the Yoru sword and wants to possess it. It starts causing chaos in the ninja world, and Naruto has to face this demon with the help of the sword. The demon could have some special abilities that make it difficult for Naruto to fight, like the ability to manipulate shadows or create illusions that are even stronger than normal ninja illusions.

It could be a new, original character created specifically for the fanfiction. This character might be an outcast ninja who discovers the Cloud Fusion Sword and uses it to gain respect and power in the Naruto world.

Sasuke would also make an interesting main character. Sasuke's quest for power might lead him to the Seven Star Sword. He could initially see it as a means to get stronger and take revenge, but then realizes that the sword comes with a price that might change his whole perspective on power.