Orochimaru might be another. Orochimaru is always looking for powerful opponents to test his abilities. A master swordsman Naruto would be an interesting target for him. He'd be curious about Naruto's new skills and would likely engage in a fight to either steal Naruto's power or just to prove his own superiority.
Sasuke could be one. Since they have a long - standing rivalry, Sasuke, with his own powerful skills, would be a great opponent for Naruto now that he's a master swordsman. They could have an epic battle where sword meets sword and their respective powers clash.
A rather unique fanfiction is the one where Naruto inherits a special sword from a dying master. The sword has its own powers and secrets. As Naruto delves into mastering the sword, he also uncovers secrets about his own family and the history of the ninja world. It's a long - form fanfiction with a lot of character development and plot twists.
He might start by observing other great swordsmen. For example, he could watch Kakashi use his sword in battle and learn from his techniques. Then, he'd practice constantly, perhaps in secret so as not to alert his enemies of his new skill.
He could face some of his old rivals like Sasuke. They have a long - standing competitive relationship, and it would be exciting to see them compete again in the Jonin exams.
In fanfiction, Naruto as a master swordsman might have a fighting style that is based on his experiences. Since he has always been about protecting his friends, his swordsmanship could be defensive - oriented at first. But as he grows in power, he would start to use more aggressive techniques. He could use the Rasengan in combination with his sword, perhaps creating a Rasengan - charged sword strike. His style would also be influenced by the people he has met, like learning some sword - handling tricks from Kakashi or other sword - using ninjas in the village.
A swordsman can fit in by being a traveling warrior. He could be like a ronin, wandering from village to village in the Naruto world, offering his sword skills for hire or just looking for worthy opponents. For instance, he might show up at the Chunin Exams to test the skills of the young ninjas.
One potential ally could be Neji. Neji has his Byakugan and his skills in combat. He could see the dark swordsman as an equal in terms of combat ability and form an alliance. Also, Tenten, who is fascinated with weapons. The dark swordsman's sword and his skills with it could draw Tenten's interest, and she might become an ally. They could exchange knowledge about different weapons and fighting techniques.
In Naruto fanfiction, Zabuza Momochi is often regarded as one of the top swordsmen. His large and menacing sword, the Kubikiribōchō, along with his skilled combat abilities, make him a formidable character in many fan - created stories. He has a unique fighting style that combines brute force with precision slashes.
Rock Lee could be a main character. His unwavering determination and his unique taijutsu skills could make for some exciting fight scenes against the evil swordsman. And Hinata, with her gentle yet strong nature. She might be the one who discovers some of the swordsman's weaknesses through her observant nature and then shares this information with Naruto and the others.
Yes, there are likely some interesting 'Harry Potter Master Swordsman' fanfictions out there. You can start by looking on major fanfiction platforms like Fanfiction.net or Archive of Our Own. Some fanfictions might focus on a character becoming a master swordsman in the Harry Potter universe, perhaps by combining magical and sword - fighting skills in unique ways.
His opponents could include some of the samurai from the Land of Iron. They are known for their kenjutsu skills. Since Naruto is now a kenjutsu master in the fanfiction, there could be some sort of misunderstanding or rivalry that leads to battles between them. And, of course, there could be new villains created specifically for the fanfiction who are also masters of kenjutsu and pose a great threat to Naruto.