You can combine the traits of characters from both series. For example, a character could have the Sharingan from Naruto and the wings of a devil from Highschool DxD. This would give them a very distinct look and set of abilities.
Another way is to consider the character's goals. A character could be on a quest to find a way to combine the power - up systems of both worlds. They might be constantly experimenting, trying to use Naruto's chakra to enhance their Highschool DxD powers or vice versa. This would make them stand out as they are always looking for new ways to grow stronger and are driven by this unique goal.
Think about the backstories. Maybe a character was raised in the Hidden Leaf Village but has a connection to the underworld in Highschool DxD. Their past experiences in both worlds could shape their personality. For instance, they might be very stealthy like a ninja but also have a devilish charm. They could use their ninja training for good, but also be a bit of a trickster because of their Highschool DxD influence.
Think about the backstories. A character could be a half - breed, born from a Nasuverse mage and a Highschool DxD devil. Their upbringing in two different worlds would shape their personality and abilities in a very unique way. They might struggle with their identity, which could be a great source of character development.
You can start by combining the traits of different avatars and High School DxD characters. For instance, take the loyalty of a certain devil character and mix it with the free - spirited nature of an avatar from a water - based realm.
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.
Develop the characters' relationships carefully. Let's say a Campione character is initially distrustful of the devils in Highschool DxD due to their reputation. But as they face challenges together, they begin to understand and respect each other. This kind of relationship arc can make the story really engaging. You can also introduce sub - plots that explore the different cultures and power systems of the two series. For instance, the Campione's divine powers and how they compare to the magic in Highschool DxD. By doing this, you add depth and complexity to the overall plot. And don't forget to have a satisfying climax where all the characters' growth and the different plot threads come together in a big showdown against the main antagonist.
You can give the character a unique backstory related to the Juggernaut Drive. For instance, if they were an experiment gone wrong and that's how they got the power. This would make them stand out.
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.
One possible fanfiction could be about Naruto somehow ending up in the world of Highschool DxD and meeting Moka. Maybe Naruto's skills and his never - give - up attitude would impress Moka and the other characters. He could teach them some of his ninja techniques, like the Shadow Clone Jutsu, which could be useful in battles against the devils and other supernatural beings in the Highschool DxD world.
To create engaging characters, you can start by combining the traits of characters from both series. For example, take the boldness of a Highschool DxD character and mix it with the magical finesse of a Trinity Seven character. This creates a unique blend that readers will find interesting.
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.
By focusing on character relationships. For instance, Naruto's friendly and determined nature could contrast with Arturia's more solemn and noble demeanor. And DxD characters' complex hierarchies could add another layer. Their interactions could lead to humorous or heartwarming moments, like Naruto trying to teach Arturia some ninja tricks and DxD characters being both amused and intrigued.