A potential plotline could be Naruto arriving in the Highschool DxD world and being mistaken for a new type of devil or other supernatural being due to his 'dark godlike' nature. He would then have to prove his intentions and find his place in this new world. Another plotline could involve Naruto using his skills to train the characters in Highschool DxD in combat, similar to how he trained his friends in the Naruto world.
Well, a possible story could be about Naruto ending up in the world of High School DxD. Maybe he could use his ninja skills in the battles there. For example, his shadow clone jutsu could be a really unique ability in the world of High School DxD where they mostly deal with magic and devil powers. And as a 'dark knight' in this fanfiction, he might have a darker, more brooding personality, perhaps influenced by the more mature themes in High School DxD.
In this fanfiction, Naruto's 'dark godlike' form might change the power balance in Highschool DxD. Since Naruto has always been about growth and power - up in his original story, in this crossover, he could quickly rise to a very high - level position. His values from the Naruto world might clash with the values in Highschool DxD. For instance, his belief in friendship and hard work could be a contrast to some of the more self - serving or power - hungry characters in Highschool DxD. This could lead to some interesting story arcs.
One great Highschool DxD knight fanfiction is 'The Knight's Ascent'. It has an interesting plot where the main character, a newly turned knight, has to overcome various challenges in the DxD universe. The story is well - written, with great character development.
One idea could be that Naruto is somehow transported to the world of Highschool DxD. He could use his ninja skills and chakra in the new world, maybe even teach some of the characters there a thing or two about combat. For example, he could show Issei how to better control his power using chakra control techniques.
The storylines can be combined by creating a common threat. Suppose an enemy emerges that is interested in both the power of the Bijuu and the power sources in Highschool DxD. This would force the characters from both universes to team up. Also, the cultural differences between the Naruto world and the Highschool DxD world can be explored. Naruto could introduce concepts like ninja clans and shinobi training to the DxD characters, while they could introduce him to the complex social hierarchies and supernatural politics in their world.
Well, in such a fanfiction, Dark Naruto might use his powerful and often shadowy abilities to outwit Rias. Maybe he'd expose some of her less - than - noble actions in the Highschool DxD world. He could easily overpower her in battles, using his ninja skills and the dark powers he has. For example, his shadow clones could be used to confuse Rias and her peerage while he strikes from the shadows.
Well, for one, it gives readers a chance to explore different character arcs. In these fanfictions, knights can be developed in ways that might not be possible in the original series. They can have their own storylines, relationships, and growth. Also, the battles and conflicts that knights get involved in are often more focused on their knightly skills and values, which is really interesting to read about. For example, a knight might have to face a powerful devil while upholding his code of honor, and that creates a really engaging narrative.
The female characters from Highschool DxD, like Rias, would be intrigued by the unique personalities of the Naruto characters. Rias might see potential in some of them to join her peerage. And the Naruto girls, like Sakura, would be a bit shocked at first by the more revealing outfits and flirty nature of some of the Highschool DxD characters. But over time, they would bond over things like protecting their friends and the school. The Naruto boys would respect the power of the Highschool DxD devils and might even try to incorporate some of their fighting strategies into their own ninja combat styles.
In a Sharingan Naruto Highschool DxD fanfiction, the Sharingan could also play a role in terms of illusions. Imagine a scenario where the character uses Sharingan - based illusions to deceive the enemies from both worlds. They could make a Highschool DxD devil believe they are in a completely different environment like a dangerous Naruto - style forest filled with traps. And for Naruto characters, they could be made to see illusions of their worst nightmares or false threats from the Highschool DxD world, which would make for some really intense and engaging storylines.