It could be that Naruto is simply loyal to his own story and the people in it. Rias is from another story entirely. He might see the fanfiction as an inappropriate mix of two different worlds that he doesn't want any part of. For example, Naruto is focused on ninja values like loyalty to the village and friendship, and the Rias fanfiction might introduce concepts that are not in line with those.
One reason could be that Naruto is used to a certain type of narrative and character development. The Rias fanfiction might have a different style of writing, themes, or character portrayals that Naruto, as a character in his own right, would find unappealing. For instance, if the fanfiction changes the power dynamics or the relationships in a way that is not consistent with what Naruto believes in, he would despise it.
Maybe Naruto has his own set of values and the concepts in Rias fanfiction go against them. He's from a different fictional universe with its own rules and ethics, and the ideas in Rias fanfiction might seem out of place or even wrong to him.
Well, it could be due to their different personalities. Naruto is all about hard work and loyalty to his friends in his own universe. Rias Gremory has a more complex and sometimes manipulative personality in her story. In fanfiction, the writer might want to create a conflict by making Naruto dislike her, perhaps because he sees her methods as being at odds with his own values.
One possible reason could be that the storylines in the fanfiction are focused on different aspects or relationships within the fanfic's universe. Maybe the author wants to explore other characters' interactions more deeply and Naruto just doesn't fit into those particular plotlines they have in mind.
In some cases, it could be that the author of the fanfiction simply wants to explore a different narrative where Rias is not the 'perfect' character she is often portrayed as in the main series. They might want to create a more complex or alternative view of the Naruto DxD universe by highlighting what they see as flaws in Rias's character.
It could be that the OC creator simply doesn't like the typical tropes or storylines often found in Rias fanfiction. For example, if the fanfictions tend to be very formulaic or over - use certain clichés, the OC might be a symbol of a break from that. Also, perhaps the OC has a specific backstory or purpose that is at odds with the general narrative of Rias fanfiction.
Some writers might write it to explore the darker side of characters. They want to see how a usually positive character like Rias can turn bad and how Naruto would react in such a situation. It's all about exploring different character dynamics.
They would likely start with some mutual curiosity. Naruto would be intrigued by Rias's devilish appearance and powers, while Rias would be interested in Naruto's ninja abilities. They might exchange stories about their respective worlds, with Naruto talking about his village and his friends, and Rias sharing about the devil society. Interaction could also involve sparring sessions to test each other's strength.
One possible fanfiction idea could be that Rias' sick brother is a key factor in a power struggle within their supernatural world. Naruto, being an outsider with his own set of skills and values, could get involved. Maybe he forms an alliance with Rias to protect her brother from those who would use his illness to their advantage.
In this fanfiction, the plot development might begin with Naruto being transported to Rias' world or vice versa. When Naruto rejects Rias, it causes a stir in the power balance of Rias' world. Her peers might be shocked or angry at Naruto's refusal. Meanwhile, Naruto is just trying to figure out how to get back to his own world. As the story unfolds, Rias might try to use her charm or power to change Naruto's mind, but he remains steadfast. This could lead to conflicts not only between Naruto and Rias but also between Naruto and the other characters in Rias' world who have an interest in the situation. Naruto will have to use his ninja skills and his strong will to navigate through this strange new world while constantly rejecting Rias' attempts to draw him in.
In fanfiction, one reason could be the Marauders' bullying of Snape. They often target him with their pranks, which are sometimes cruel. Lily, being Snape's friend (at least for a while), might despise the Marauders for their treatment of him. Also, the Marauders' cocky attitude might be off - putting to both Lily and Snape.
Definitely. The concept of combining different fictional universes in fanfiction is quite common. In a 'Naruto is Rias' Familiar' fanfiction, we could expect to see Naruto's ninja skills and powers being incorporated into the world of High School DxD. Maybe Naruto would use his shadow clone jutsu in battles in the DxD universe or his rasengan against some of the devils. It could also explore how Naruto, with his strong sense of justice and loyalty, would interact with Rias and the other characters in her peerage.