Perhaps Zabuza saves Naruto's life at a crucial moment but under the condition that Naruto has to serve him. Naruto, out of a sense of obligation and his own code of honor, agrees to be his tool. Zabuza might see Naruto's potential and want to use his unique abilities, like his chakra control or his ability to learn new jutsus quickly, for his own purposes, such as taking over certain territories or getting revenge on his enemies.
In the fanfiction world, it could be that Naruto is in a desperate situation. Maybe he's being hunted by other powerful ninja and Zabuza offers him protection in exchange for being his tool. Zabuza could also be using Naruto to gain access to Konoha's secrets. Since Naruto is an important part of Konoha, he might be used as a key to unlock valuable information about the village's defenses, jutsu scrolls, or the location of important artifacts.
Well, it could be due to some sort of mind - control jutsu. Maybe Zabuza uses a special technique that he learned in the Hidden Mist Village to make Naruto do his bidding.
On a more practical level, Naruto's skills might be misused. Instead of using his power to protect Konoha and the people he cares about, he's using it for Zabuza's self - centered motives. This could also make him a target for other ninja who oppose Zabuza. So not only is he in danger from the people he used to call friends, but also from new enemies. And if he ever tries to break free from Zabuza, he might face severe retaliation from Zabuza himself, which could be life - threatening.
Zabuza could be quite cold to Naruto at the beginning. He's not exactly the warm - and - fuzzy type. But when Naruto shows his skills and tells his story of being banished unjustly, Zabuza might empathize on some level. He might not show it openly, but he could start to protect Naruto in his own way, perhaps because he sees a bit of his younger self in Naruto who was also wronged by the ninja system.
Maybe he defeated Zabuza in a battle and took it as a trophy.
Well, Naruto is a very impressionable character. His idolization of Zabuza might make him more open to using unorthodox or morally grey techniques. He could start to question the black - and - white view of good and evil that he initially had. Maybe he would see the value in Zabuza's loyalty to Haku, which could in turn strengthen Naruto's own bonds with his friends.
Sasuke would probably be very suspicious at first. He doesn't trust easily and seeing Naruto with Zabuza, an enemy in his eyes, would make him question Naruto's motives. Kakashi, on the other hand, might be more open - minded. He would likely keep an eye on the situation to make sure Naruto isn't being led astray but also recognize that Naruto has a way of changing people for the better.
There might be. Fanfiction is full of creative and sometimes unexpected ideas. This concept could bring a whole new dynamic to the Naruto story. It could potentially rewrite parts of Naruto's past, like if Zabuza was involved in his early life in some way. Or perhaps it could create a different kind of bond between Naruto and the Hidden Mist Village, since Zabuza was from there.
In most traditional 'Naruto' lore, Naruto has no relation to Zabuza. However, in fanfiction, the author can create any alternate reality they like. So, it's possible for Naruto to be Zabuza's son in some fan - made stories. But this goes against the original story's character backgrounds and relationships.
Maybe he finds it after a battle where Zabuza was defeated. It could have been left behind, and Naruto, seeing its potential, decides to take it up.
His confidence could grow significantly. By being able to save two powerful ninjas, Naruto would prove to himself that he is capable of great things. He may start to believe more in his own abilities and take on more challenging tasks without hesitation. For example, he might be more willing to take on stronger opponents in future battles.
Naruto's character could develop in terms of his understanding of the ninja world. Zabuza is a more experienced and darker - minded ninja compared to Naruto. By being with him, Naruto might start to see the grayer areas of the ninja world, not just the black - and - white view he had before.