The sword could bring out a more strategic side of Naruto. He would have to think about how to incorporate the sword into his existing combat strategies. For example, he might use the sword to set up distractions while he prepares his more powerful ninjutsu. This would require him to be more calculating and less impulsive in battles.
It would make him more confident. Having a powerful sword gives him an extra edge in battles. He would no longer rely solely on his ninjutsu and shadow clones. This new weapon would add a new dimension to his fighting style, making him more versatile.
His outfit might change a bit. He would need some kind of holster or attachment for the lightsaber. Maybe he would add some elements to his clothes that are related to the Star Wars universe, like a Jedi - like robe or a belt with some Star Wars - style buckles. His hair might also look a bit different when he's using the lightsaber, as if the power of the weapon gives him a more intense look.
If Naruto gets magic in fanfiction, it would likely make him more confident. Having new powers would give him an edge in battles, and he'd feel more capable of achieving his goals. For example, if he could use magic to heal quickly, he'd be less worried about getting injured in fights. This newfound confidence could also change how he interacts with his friends. He might be more assertive in leading them.
His relationship with Sasuke could change significantly. With the new doujutsu, Naruto might be able to understand Sasuke's motives better or even be able to sense when Sasuke is in danger from afar, leading to more protective or empathetic interactions.
He would probably add more slashing and thrusting motions to his attacks. Instead of relying solely on his shadow clones and rasengan, he could use the sword for close - range combat and combine it with his ninjutsu. For example, he could channel chakra through the sword to create a more powerful slash or use it to deflect incoming attacks more effectively.
He might start using more sweeping and slashing motions. Instead of his usual close - range punches and kicks, he could use the scythe's long reach to keep his opponents at a distance. For example, he could swing the scythe in wide arcs to fend off multiple enemies at once.
His relationship with Sasuke would likely be affected. Sasuke might initially be suspicious of Naruto's new form, thinking it could be a trick by an enemy. But as time goes on, they could find new ways to work together. Naruto's new Kitsune powers could complement Sasuke's skills. For example, Naruto could use his enhanced speed as a Kitsune to keep up with Sasuke in combat.
His relationship with Sakura might change. Sakura would be even more impressed with Naruto having this new power. She might see him as an even greater ninja and could potentially develop stronger feelings for him. Naruto, on the other hand, might use his telekinesis to do small things for Sakura, like picking flowers for her without having to touch them.
If Naruto gets de - aged, his friends would likely become very protective of him. For example, Sasuke might feel a stronger sense of responsibility to keep Naruto safe, since Naruto is now in a more vulnerable state. Sakura would probably mother him a bit, making sure he eats well and studies hard at the academy. His friends' perception of him would shift from seeing him as an equal or even a leader in some cases, to seeing him as someone who needs their care and guidance.
If Zabuza gives Naruto his sword, the plot would take an interesting turn. Naruto would now have a physical connection to Zabuza's past. This could lead to Naruto exploring Zabuza's history more deeply, perhaps uncovering secrets that were previously unknown. In battles, he would have an unexpected weapon. Enemies who knew Zabuza's sword might be more cautious or more aggressive towards Naruto. And his friends might have mixed reactions. Some might worry that Naruto is getting too involved with a darker part of the ninja world, while others might see it as a chance for Naruto to grow and gain more power.
His fighting style would likely become more melee - focused. Naruto is used to fighting from a distance with his jutsu, but with Zabuza's sword, he would need to get up close and personal. He might start to combine his ninjutsu with sword strikes. For example, he could use a clone to distract an enemy while he closes in with the sword for a surprise attack.