Naruto could inherit the Ghost Rider's curse as part of a mysterious plot. His sense of justice, which is already strong, could be further amplified by the Ghost Rider's power. This would make him even more determined to fight against evil in the ninja world. The Ghost Rider's penance stare could be adapted into a ninja - style jutsu, where Naruto looks into the eyes of his enemies and makes them face the consequences of their actions, but in a way that's more in line with the Naruto universe's concepts of chakra and spiritual energy.
Well, one way could be Naruto having the Ghost Rider's chain weapon. He could use it in his combat style, like when he's facing tough enemies. Maybe the chain could be enhanced with his chakra, giving it new abilities.
His relationships with his friends could change. Some might be afraid of him when they see the power of the Ghost Rider in him. But others, like Sasuke, could see it as a new strength to be reckoned with. Naruto would have to work hard to maintain his bonds while also exploring his new abilities.
One possibility in this fanfiction scenario is that Naruto is seeking a new form of power to protect his village. He somehow makes a deal with a demon or entity related to the Ghost Rider. This entity sees Naruto's strong will and determination and decides to bestow upon him the powers of the Ghost Rider. Naruto's existing abilities like his Rasengan could be infused with the Ghost Rider's powers, creating a whole new and unique attack. His ability to move at high speeds as a ninja would also be enhanced by the Ghost Rider's superhuman strength and agility.
Well, Naruto has his Nine - Tails chakra mode. If he combined that with the Ghost Rider's power, he could have a super - charged form. The Nine - Tails' chakra could fuel the Ghost Rider's flames, making them hotter and more destructive. And the Ghost Rider's ability to sense evil could help Naruto identify hidden threats in the ninja villages.
Another concept is that Naruto is possessed by a spirit similar to the Ghost Rider. His friends initially fear him, but he has to prove that he can use this new power for good. He might have to learn how to use the power without being consumed by the rage and darkness that often comes with it.
Another idea is that there's a curse in the Naruto world that has some similarities to what made Ghost Rider who he is. So, Ghost Rider comes to help Naruto understand and deal with this curse. They could go on a journey together, facing challenges along the way, and in the process, Naruto might learn some new techniques inspired by Ghost Rider's abilities.
It could be Orochimaru. He is always seeking power and the strange and powerful abilities of the Ghost Rider might be something he desires. He could try to capture or study the Ghost Rider to gain an edge in his own plans for power and immortality.
Naruto's Rasengan could potentially be combined with Ghost Rider's Penance Stare. Imagine Naruto creating a Rasengan and infusing it with the spiritual power of the Penance Stare. It would be a super - powerful attack that not only physically damages the enemy but also makes them face their sins.
Yes, there are quite a few out there. You can check some popular fanfiction websites like FanFiction.net or Archive of Our Own. Just search for 'Naruto is a Ghost Rider' on their search bars and you'll likely find some interesting reads.
Naruto's character could develop in terms of his leadership skills. In the DxD universe, there are complex power structures and political situations. By being involved in the events there, Naruto could learn different leadership styles and apply them to his own way of leading. He could also develop his understanding of friendship and loyalty in a new context. For example, when facing enemies with the Rider or Caster, he might have to make tough decisions about who to trust and how far he's willing to go to protect his new allies, which would all contribute to his character growth.
Another option could be a new character created specifically for this fanfiction. This character could have the ability to manipulate both the ninja and the Ghost Rider elements, and wants to use that power to rule over both worlds. So, they would be the main adversary that Naruto and others have to face.