Yes, it can be. Naruto is a very popular series, and with its large fan base, there are bound to be a lot of fanfictions. Some fans may lack the creativity to come up with original ideas, so duplicate fanfictions are likely to emerge, making it seem like Naruto is being replaced in some areas of the fandom.
Well, 'naruto replaced by duplicate fanfiction' might imply that there's an excessive amount of fan - created stories that are just copies or very similar to existing Naruto concepts. This could be due to the popularity of Naruto. Some fans might not be creative enough and end up creating duplicate fanfictions, and as a result, it seems like Naruto is being replaced in a sense. For example, in some online fanfiction platforms, you might see a flood of stories that follow the same plotlines as Naruto, making it hard to distinguish the original charm of Naruto from these duplicates.
It could mean that in some context, the original Naruto work has taken the place of fan - created fiction about Naruto. Maybe official Naruto content has become so comprehensive or dominant that fanfiction seems less relevant.
It can be seen as a good thing. The official Naruto content is likely to be of high quality and consistent with the overall vision of the creator. So if it replaces fanfiction, fans get a more 'authentic' Naruto experience.
One possible plotline could be Naruto being transported to the Highschool DxD world and having to adapt to its unique rules and social hierarchy. He might use his ninja skills to rise through the ranks in the school. Another could be that Naruto's presence disrupts the existing power balance in the DxD world, leading to various conflicts and alliances. Maybe the devils and angels in the DxD world are intrigued by Naruto's power and try to either recruit him or eliminate him.
The devils who oppose Naruto's presence and his new - found influence in the DxD world could be main antagonists. They might see him as a threat to their power structure and the way things are done in their society.
Fanfictions about the 10th doctor duplicate and Rose can vary greatly. They can be set in different time periods or even different versions of the TARDIS. Some might have the duplicate and Rose facing new enemies that they have to overcome together. This creates a lot of opportunities for character development. The duplicate might start as a bit of an enigma but as the story progresses, we see him grow and change, especially in relation to Rose.
Well, you can try searching on popular fanfiction websites like Fanfiction.net or Archive of Our Own. Just type in 'Naruto replaced Highschool DxD' in their search bars, and you should be able to find some relevant works. However, the availability might vary depending on the popularity of this particular crossover concept.
One idea could be that Naruto finds himself in the DxD world and tries to use his ninja skills in the battles against devils and fallen angels. Maybe he forms unique alliances with the various factions in the DxD world, like teaming up with Rias Gremory's peerage and teaching them some ninja techniques.
" My Esper Ability is Perfect Duplication "," I Can Unlimited Duplication of Esper Abilities "," The Age of Esper Abilities: I Can Unlimited Duplication "," Under One Person: I Can Unlimited Duplication of Esper Abilities "," I Can Unlimited Duplication of Esper Abilities!" All the novels involved the protagonist being able to copy other people's abilities. The background of these novels was a world full of supernatural powers. The protagonist improved his strength by copying the supernatural powers of others. Among them," My Esper Ability is Perfect Duplication " was created by the Little Panda Tuan Yuan," I Can Unlimited Duplication of Esper Abilities " was created by the Old Earth Demon," The Age of Esper Abilities: I Can Unlimited Duplication " was created by Qing Moyou," Under One Man: I Can Duplication of Esper Abilities " was created by Li Changan, and " I Can Unlimited Duplication of Esper Abilities!" Composed by Half Moon Orange. These novels all showed the storyline of the protagonist in the world of superpowers to achieve a counterattack and become the strongest by copying superpowers.