Naruto's character would likely become more stoic. Vergil is known for his calm and collected demeanor, so Naruto might start to suppress his more exuberant emotions. He could become more calculating in battles, thinking several steps ahead like Vergil does when facing his enemies.
In a Naruto is Vergil fanfiction, it could be that Naruto's connection to Vergil is through a dream - like realm. Every time Naruto sleeps, he enters a world where he meets Vergil and learns from him. Over time, Naruto starts to incorporate Vergil's values into his own. He becomes more focused on power for the sake of protecting those he loves in a more 'Vergil - esque' way, which means he might be willing to make some sacrifices that he wouldn't have considered before, like sacrificing some of his own personal relationships for the greater good of the village.
Well, Naruto might gain some really cool new combat skills. Vergil is a very skilled fighter, so he could teach Naruto some advanced sword techniques or unique ways of using chakra in combat. Maybe Naruto would also pick up on Vergil's more strategic and calculating approach to battles.
The main characters are Naruto, the well - known ninja from the Hidden Leaf Village, and Vergil, who is likely from another realm or universe with his own set of powerful skills. In this fanfic, their interaction forms the core of the story as Naruto looks to Vergil for training and growth.
The combination of their powers is really exciting. Naruto's already vast array of ninja techniques combined with Vergil's devilish powers would create some epic battles. For example, Naruto's shadow clones could be used in new and unexpected ways when paired with Vergil - like powers, like having a clone perform a Vergil - style dash attack while the real Naruto does a chakra - powered jutsu.
In a Naruto - Vergil descendant fanfiction, Naruto might gain some of Vergil's powers. He could have the ability to summon spectral swords, similar to Vergil's summoned swords in his own universe. This would give Naruto an edge in combat, especially against powerful opponents. Additionally, the story could focus on the cultural clash between the Naruto world and the world that Vergil comes from. Naruto, being a descendant, would have to navigate both cultures, which could lead to interesting character development. He might introduce the concept of chakra to Vergil's world or vice versa, creating a unique blend of the two universes.
One common character paired with Vergil is Dante. Some fanfictions explore a romantic relationship between them, which often delves into the complex dynamic of their brotherly bond and how it could transform into something more. It's a very unique take on their relationship.
Nero is also a popular character to be paired with the reborn as Vergil. Given Nero's connection to Vergil in the original story, in fanfiction, their interactions can range from mentorship - where Vergil helps Nero master his powers, to more adversarial relationships if the reborn Vergil has different motives.
In this fanfiction, perhaps Naruto is sent to Vergil's world for some reason. There, he might be exposed to the same kind of power sources as Vergil, like demonic energy. His own chakra could start to mutate and transform, gradually making him more like Vergil. And with Naruto's strong will and Vergil's combat skills, it would create a really interesting character.
His relationships would be very different. With his friends like Sasuke and Sakura, they might be a bit confused or even scared at first. Naruto, now with Vergil's personality, could be more aloof and distant. But over time, they might learn to understand and work with this new Naruto.