It could also be due to a change in the story's setting. In the fanfiction, perhaps the enemies are much stronger than in the original Naruto universe. So, compared to them, Naruto appears weak. For instance, if the new villains have some kind of power that nullifies Naruto's jutsu, it would put him at a disadvantage.
One reason could be the author's intention to explore a different narrative. Maybe they want to show how Naruto would struggle without his usual powers or support system. For example, if he lost his chakra control, it would make him seem weak.
One reason could be to create a contrast. In the original series, Naruto is known for his honesty and integrity. So, making him a con artist in fanfiction shows a complete opposite side of what fans expect. It makes for an interesting and unexpected storyline.
In fanfiction, it might be a result of a curse or some dark magic. For example, a villain could have cast a spell on him that weakened his heart both physically and emotionally.
One possible plotline could be Naruto getting transported to the Fairy Tail world and having his powers suppressed. He then has to learn Fairy Tail magic from scratch. Another could be that Naruto is cursed in the Fairy Tail world which makes him weak, and he has to find a way to break the curse while making friends in the guild.
It's very likely that there is. Fanfiction writers love to play with different concepts and universes. In a 'naruto weak fairy tail fanfiction', perhaps the writer is trying to show how Naruto would adapt in a world where he doesn't have his usual strength. He could form new alliances, learn Fairy Tail magic, and develop in ways that are different from his original character arc. But to actually find such fanfiction, it's best to search through popular fanfiction repositories and use the exact phrase 'naruto weak fairy tail fanfiction' in the search bar.
The fanfiction changes the perception by challenging the idea of his invincibility. It forces the readers to consider what Naruto would be like if he wasn't always able to pull through with his signature moves. It might make some readers see him as a more complex character rather than just a one - dimensional hero.
Well, in fanfiction, anything can happen. But Naruto being a weak Fairy Tail mage seems a bit off. Naruto is a powerful ninja with a strong will. In Fairy Tail, mages also rely on their willpower to some extent. Naruto could potentially draw on his ninja skills and combine them with magic in unique ways. For example, his shadow clone jutsu could be adapted into some form of magical clone spell. His Rasengan could be transformed into a magic - based attack. So, he may face some initial challenges in understanding magic, but he's not likely to be weak.
In many Naruto fanfictions where he is an awakened being, Naruto often has enhanced powers. He might have greater control over his chakra, and his jutsu could be more powerful. For example, his Rasengan could have additional effects like being able to disrupt an enemy's chakra network on a much larger scale.
One motive could be to deceive his enemies. By making them think he's weak, they underestimate him, and he can then strike when they least expect it.
The contrast. When a fanfic features a weak character in the Naruto DxD universe, it creates an interesting dynamic. For example, seeing a character with less power try to survive in a world full of powerful ninjas and devils makes for an exciting read as they have to rely on their wits more than their strength.