One potential plotline could be Naruto being summoned to the world of Rias by accident. He then has to figure out how to get back home while also getting involved in the power struggles within the devil world. Maybe he becomes a key player in a battle for control of a certain territory.
Well, 'The Crossover of Rias Gremory' is a fanfiction that you might like. It combines the world of Rias Gremory with other fantasy elements. In this fanfic, there are some really cool battles and strategic planning. The author does a great job of bringing out the unique abilities of Rias in the crossover scenario. It also explores some new relationships that Rias forms which add depth to the story.
In a Naruto and Rias Gremory fanfiction, Naruto's chakra system could interact in interesting ways with the magic in Rias's world. His ability to control and manipulate chakra might be seen as a form of power that the devils would either fear or try to understand. Rias, on the other hand, could introduce Naruto to the political and social aspects of her world. They could also exchange combat techniques, with Naruto showing the devils how to move with the speed and stealth of a ninja, and Rias's group teaching Naruto some devil - specific magic that could enhance his abilities in different ways.
One possible idea for this fanfiction could be Naruto being transported to the world of High School DxD. He might end up attending the same school as Rias. Given Naruto's strong sense of justice and his combat skills, he could quickly become involved in the supernatural battles and power struggles in that world. He might also form an interesting relationship with Rias, perhaps starting as friends and gradually developing into something more as they face various challenges together.
The appeal of 'rias gremory crossover fanfiction' lies in the combination of different fictional elements. It allows fans to see their favorite character, Rias Gremory, in new and unexpected situations. For example, when she is crossed over into a different story world, it creates a whole new set of possibilities for adventure and character development.
One common theme is love and romance. Since it's about Rias Gremory and a male reader, there's often a development of a romantic relationship between them.
Obviously, Harry Potter would be one of the main characters. He brings his own story, skills, and personality from the Harry Potter series. And Rias Gremory would also be a main character as she is from her own universe. Her leadership and unique abilities would play a major role. Hermione and Ron could also potentially be main characters as they are Harry's closest friends. In the Rias Gremory side, her peerage members like Akeno or Koneko might also be important characters in the fanfic.
In this fanfic, an interesting concept could be the power dynamics. Harry Potter has his own set of powers and skills, and Rias Gremory has her own abilities and her peerage. When they come together, there could be a whole new power structure. Maybe they form an alliance and have to figure out how to combine their powers effectively. It could also be about the exploration of different values. Harry Potter values friendship, courage, etc., while the Rias Gremory world might have different values related to loyalty within the peerage. This contrast could lead to some great character development and storylines.
Well, it could be really interesting. Harry could bring his magic skills from the wizarding world of Hogwarts. Maybe he'd introduce new spells to the world Rias is in. He might also form a strong alliance with Rias and her group, using his experience in fighting dark forces like Voldemort to help them in their battles.
The main characters are Rias Gremory, who has her own set of powers and a leadership role in her devilish world, and Harry Potter, the young wizard. Rias would play a key role in shaping Harry's new path. Additionally, we might see characters like Dumbledore from the Harry Potter universe popping up to check on Harry. And from Rias's world, her servants or allies might be involved in the story as they interact with Harry.