He could learn Zabuza's signature water - style jutsu, like the Hidden Mist Technique. This would give Naruto an advantage in terms of creating diversions and hiding his movements during battles.
In this fanfiction, Naruto might gain some unique and deadly water - style techniques from Zabuza. Zabuza is a master of assassination and water - style jutsu. So Naruto could become more stealthy and proficient in close - combat water attacks. He may also learn about the darker side of the ninja world from Zabuza, which could make him more cynical or more understanding of the different kinds of shinobi out there.
Well, one possibility is that Naruto gets Zabuza's sword and tries to master its use. He might face challenges in understanding the unique abilities of the sword. Maybe he initially struggles to wield it properly because it's a different type of weapon compared to his usual ninja tools. But as he trains with it, he discovers new fighting techniques and becomes more powerful.
Well, if Naruto gets Zabuza's sword in the fanfic, it could change his entire approach to battles. Zabuza was known for his swordsmanship skills. Naruto might start training with the sword under the guidance of someone like Kakashi. He could learn to infuse his chakra into the sword, creating new and powerful attacks. Maybe he would even develop his own special jutsu that combines the sword and his existing ninjutsu.
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.
One possible reason could be if Naruto in the fanfiction is being unfaithful to her. In the original series, their relationship is built on trust and love. So, if the fanfic portrays Naruto in a way that goes against that, Hinata might get mad.
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.
If Hinata gets mad in the fanfiction, it can create a lot of drama. It might lead to a rift between her and Naruto, which could change the whole dynamic of their relationship. For instance, they might stop talking for a while and Naruto has to figure out how to make it up to her.
In some fanfictions, Sakura may make decisions without considering Naruto's opinion. Naruto values his friends and their input, so if Sakura goes ahead and does something like endangering the team or making a big decision on her own that affects everyone, Naruto could get mad. Also, if Sakura were to insult Naruto's dream of becoming Hokage, that would definitely be a reason for his anger as that dream is very important to him.
Zabuza could be portrayed as more of a mentor figure. Instead of just being a ruthless assassin, he could be shown guiding Naruto in some aspects of combat or strategy. Maybe he survived his encounter with Kakashi and had a change of heart, and now he imparts his knowledge to Naruto who is now a sensei himself.