In some fanfictions, the connection between Naruto and Sparda might be created through some convoluted plot devices. Maybe a powerful being in the Naruto universe has a link to Sparda's world, and through some magic or special bloodline manipulation, Naruto ends up being related to Sparda's bloodline. However, it's mostly a creative and often far - fetched idea in the realm of fanfiction.
Well, in this kind of fanfiction, it could be that there was some sort of interdimensional event. For example, Sparda's essence or some of his power was transferred across dimensions and ended up being incorporated into Naruto's family line. It might also be that a character from the Devil May Cry universe, which is related to Sparda, somehow made their way to the Naruto world and had a family there, leading to Naruto being a descendant. But these are all just wild ideas within the fan - created stories.
The fanfiction might explore the concept of a Naruto character being a descendant of Sparda in many ways. For instance, the character could have a special form or transformation similar to Dante's devil trigger in the Devil May Cry series (since Sparda is from that). This form could give them enhanced strength, speed, and abilities. They could also face challenges related to their dual heritage, like being shunned by some in the Naruto world who fear the unknown powers. And the story could revolve around how they overcome these prejudices and prove themselves as a valuable asset to their comrades and the entire ninja community.
It could be Naruto himself. Imagine if Naruto was secretly a descendant of Sparda. He would already have his own powerful chakra and then add the powers from Sparda's bloodline. It would make him an even more formidable force in the ninja world.
One possible power is enhanced speed. Sparda is known for his agility in combat, and Naruto as his descendant in fanfiction could inherit this. He would be able to move so fast that his opponents could barely keep up. Another power could be the ability to manipulate demonic energy in a way similar to how he manipulates chakra. This could give him new jutsu - like abilities, for example, creating energy blasts with demonic properties. He might also inherit Sparda's resistance to certain types of attacks, like magic or dark energy attacks that are common in the Devil May Cry universe.
In a 'naruto reincarnation of sparda fanfiction', it may start with some sort of mysterious event that links Naruto to Sparda. Perhaps there is a prophecy or an ancient magic at work. Naruto could then start to exhibit strange behavior or powers. His physical appearance might even change slightly to reflect his new connection. His friends like Sasuke and Sakura would be confused at first but then would try to help him figure out what's going on. The story could also involve Naruto having to fight against foes who are after his new - found powers or those who want to disrupt the balance between the two merged concepts.
A unique feature is the fusion of two distinct universes. The Naruto universe with its ninja clans, jutsus and complex politics is merged with the Sparda lore which might involve demons, devil arms and a different kind of power hierarchy.
Naruto may also become more solitary. Sparda often fought alone, and Naruto, influenced by this, might start to distance himself from his friends at first. However, he would still have that underlying loyalty and would eventually find a way to balance his new - found independence with his relationships.
He might have paler skin, like a typical vampire. His eyes could change color, maybe to a deep red. And his teeth could be a bit sharper, especially when he gets angry or hungry for blood.
One idea could be a crossover where Naruto somehow gets transported to the world of Rosario Vampire and meets characters like Tsukune. Meanwhile, the influence of Sparda's power or legend could be introduced in a way that Naruto discovers a hidden power within himself similar to Sparda's. For example, Naruto might find a demonic weapon in the Rosario Vampire world that has a connection to Sparda's power.
Obviously Naruto would be one of the main characters. Since it's about his reincarnation related to Sparda. But there might also be characters from the Naruto series like Sasuke, Kakashi etc. who would be involved in the story. And depending on how the Sparda aspect is incorporated, there could be some new characters related to Sparda's world as well.
One common theme is the clash of two different worlds. Naruto's world of ninjas and Angelo Sparda's more demon - related world can create a lot of interesting scenarios. Another is the idea of power and how they each use their unique powers in different ways.