It could be really interesting. Maybe Naruto stumbles upon some knowledge about Zeoticus Gremory's power and is in awe. He might start to study the ways of Zeoticus Gremory in secret, trying to incorporate some of those ideas into his ninja training. For example, if Zeoticus Gremory has some unique combat or leadership styles, Naruto could be inspired to adapt them to his own fight against the Akatsuki or to lead Konoha in a different way.
Yes, there could be. Fanfiction often combines different fictional universes in creative ways. It's not uncommon for fans to write stories where characters from one series, like Naruto, have an interest in or are related to characters from another series, such as the Zeoticus Gremory from High School DxD. However, the popularity and availability of such a specific fanfiction might vary depending on the fanfiction platforms and the creativity of the fan writers in that community.
One idea could be a crossover where Naruto's world is merged with the one that Gremory and Gabriel exist in. Naruto, with his strong will and ninja skills, could form an alliance with Gremory, who might be from a noble demon family, and Gabriel, an angel. They could fight against a common enemy that threatens both their realms, like a powerful dark force that wants to disrupt the balance between the ninja world, the demon world, and the angelic realm.
It could be that some of the neglected characters from Naruto, like Rock Lee for instance, are made main characters in this fanfiction and are paired with a Gremory character. Maybe a Gremory character who also has been somewhat overlooked in their own series. This would give a new perspective and new storylines to explore.
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.
In 'naruto gremory fanfiction', we get to see the characters from Naruto in a new light. For example, seeing Naruto interact with the Gremory family members and navigate their world. It also allows for new power combinations and character growth. Naruto might learn new abilities from the Gremory world and vice versa, which makes the stories full of surprises and fresh ideas.
In this fanfiction, the plot could also center around Naruto trying to understand the Gremory family's history and secrets. As he delves deeper, he discovers things that could change the future of the family. He might also have to deal with enemies from both the Naruto universe and the Gremory universe who are out to stop him from becoming a successful heir. He would need to use his quick thinking and combat skills to protect himself and the family.
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.
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.
Sure. One great 'naruto gremory fanfiction' is 'Naruto: The Gremory Heir'. It combines the elements of Naruto's world and the Gremory family in an interesting way. The story has some great action scenes and character development.
There might also be some original characters created specifically for this fanfiction. For example, a character who was once an outcast in the Gremory family but becomes Naruto's closest ally. Or a powerful enemy who has a vendetta against the Gremory family and sees Naruto as an easy target since he's new to the family.