Well, perhaps a plot where Orochimaru manages to get his hands on Naruto and uses some dark experiments to turn him into an emotionless tool. Naruto then starts to carry out Orochimaru's bidding, like stealing valuable scrolls from other villages. Or maybe in a parallel universe, the Akatsuki capture Naruto and brainwash him into an emotionless tool to use against the Hidden Leaf, and his friends have to find a way to break the spell.
His relationships would become very different. With his friends, they would feel like they've lost him. They would constantly be trying to find a way to bring back his emotions. His relationship with his mentor, like Iruka or Kakashi, would also change. Iruka, who has always seen Naruto as a warm - hearted boy, would be heartbroken. And Kakashi would be more determined than ever to find a solution, but the emotionless Naruto would not understand their concerns as he no longer has the ability to empathize.
Well, it depends on the fanfiction. Some fanfic authors may take a rather unorthodox approach and portray Naruto as secretly emotionless. However, this goes against the canonical Naruto who is full of emotions like determination, friendship, and love. But in the realm of fanfiction, anything can happen. It could be a creative exploration of how Naruto would act if he had some sort of emotional block or had been through some traumatic event that made him seem emotionless on the surface.
His relationships take a big hit. His friends like Sakura and Shikamaru would find it hard to connect with him. Sakura, who's used to Naruto's warm and often goofy self, would be at a loss. Naruto's lack of emotion means he won't show the same level of care or enthusiasm towards her. With Shikamaru, their conversations would be very different. Shikamaru is used to Naruto's emotional outbursts and quick decisions based on feelings. Now, Naruto would be more reserved and logical, which could strain their friendship.
In Naruto fanfiction, an emotionless frozen Naruto can be a really interesting concept. It might be due to some dark magic or a traumatic event. This could lead to a very different story line, like his friends trying to bring back his emotions. Maybe he was frozen in time and lost his ability to feel during that process.
One idea could be that Naruto was experimented on by a secret organization in the fanfiction. They erased his emotions to turn him into a weapon against the Hidden Villages. This could lead to a story where his friends try to restore his emotions and bring him back to his true self.
There are fanfics where Naruto is made emotionless by a curse. In these stories, his relationships with others are severely affected. Sakura might try to reach out to him, but he just stares blankly. Sasuke might not even recognize this new Naruto. The story could then revolve around the other characters' attempts to bring back Naruto's emotions, like they try different jutsus or find some magical cure.
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.
One common theme is isolation. When Naruto becomes emotionless and godlike, he often isolates himself from his friends and the village. He feels that his new powers and lack of emotions set him apart. Another theme is the search for purpose. Since he has changed so much, he has to figure out what to do with his new abilities, like whether to use them for good or just to survive in a cruel ninja world.
In fanfiction, an emotionless Naruto at Hogwarts would probably be a solitary figure. He might focus solely on his studies and improving his magical abilities. Without emotions, he wouldn't get distracted by things like house rivalries or social dramas. He could approach magic in a very methodical way, much like he did with his ninja skills. However, he might also struggle to understand the importance of things like loyalty and friendship that are so highly valued at Hogwarts, until he experiences situations that make him question his lack of emotions.