On the positive side, it could inspire some fans to try and bridge the gap. There might be some fans who see this divide and try to find common ground between Naruto and Fairy Tail. They could create fan works that combine elements of both in a positive way to try and change the negative perception.
Maybe Naruto hates Fairy Tail fanfic because the two universes have very different themes and power systems. Naruto's world is more about ninja skills, clan politics, and personal growth within a set ninja framework. Fairy Tail is about magic guilds and more flamboyant magic use. The clash of these different concepts in a fanfic might be unappealing to Naruto fans who prefer the purity of the Naruto universe.
The overall mood of the story would change. It would become more somber. There would be a sense of loss. And it might lead to a quest to bring Naruto back. Maybe some of the Fairy Tail members would go on a journey to prove Naruto's innocence or to find a way to make the guild accept him again. This would open up new story arcs and adventures in the fanfiction.
It can create a divide within the fandom. There are those who enjoy fanfiction and see it as a creative extension of the Naruto world, and then there are those who hate it. This can lead to arguments and a bit of a rift between different groups of fans.
No, it's not a common concept. Naruto and Fairy Tail are two distinct anime/manga series. While there are crossover fanfictions between them, the idea of Naruto being directly related to the 'end' of Fairy Tail fanfiction is rather unusual and not something you'd typically see.
It can add a lot of twists. For example, if a male lead is genderbent, their goals might change. A male character who was previously focused on brute strength - based achievements might, as a female, be more interested in diplomatic or relationship - building aspects, thus changing the direction of the plot.
It can introduce a major conflict. If Erza is corrupted, it's like a bomb in the middle of Fairy Tail. Her actions as a corrupted character can disrupt the normal harmony of the guild. For example, she might oppose her friends or engage in actions that are harmful to the guild's reputation. This then forces the other characters to deal with this new threat, changing the direction of the overall plot.
There might be a lot of bad writing in the fanfiction that involves Natsu. Poorly written dialogue, actions that don't make sense for his character, or just a general misrepresentation. If the fanfiction is full of these elements, it could give the impression that Natsu hates in that fictional world created by the writer, even though it's not true to his real character.
It could lead to a change in the guild's dynamics. Naruto has his own unique combat style and abilities. His departure might make the guild realize the need to diversify their fighting strategies. For example, they might start to look for members with skills similar to Naruto's ninja techniques.
The crossover can also lead to new power - up scenarios. For instance, if they face a very strong enemy together, they might combine their powers in a unique way. Naruto could provide the raw power and speed, while Mavis uses her strategic mind and magic to direct and enhance that power. This could result in a new super - form or ability that neither of them could achieve on their own.
Well, if Lucy is pregnant in a Fairy Tail fanfiction, it could add a whole new layer of drama. It might make the other characters more protective of her. For example, Natsu could become even more determined to keep her safe from any threats. This could also lead to changes in the guild's dynamic, as they would be looking out for not just Lucy but also her unborn child.