In a Naruto x Kushina Ghost Rider fanfiction, it could start with Kushina being the first to get the Ghost Rider powers. She then has to teach Naruto how to control it. Their relationship could be further explored as they train together. They could use the Ghost Rider abilities to travel to different dimensions, ones that are related to the spirit world of the Naruto universe. This could lead to them discovering secrets about their family history and the origin of chakra, all while using the flaming chains and hellfire of the Ghost Rider.
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.
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.
For Naruto, you could show his growth in terms of his leadership skills when he's with Naruko and Kushina. He could learn to be more patient and understanding, especially when Naruko might have a different approach to things. For Naruko, her character could be developed by showing her struggle to be recognized in a world where Naruto already has a reputation. Kushina could be developed by exploring her motherly side more deeply, as she interacts with both Naruto and Naruko.
One possible reason could be a misunderstanding. Maybe Minato thought Kushina had done something to endanger Naruto when in fact she hadn't. In the heat of the moment, he lost his temper and slapped her.
The Naruto x Kushina romance in fanfiction can be quite interesting. Fanfic writers might focus on the idea of Kushina seeing Naruto grow up and be proud of him. They could have tender moments like Kushina helping Naruto with his studies or training. There could also be a plot where they face challenges together, like protecting the village from a new threat. This kind of fanfiction allows fans to imagine a different family dynamic for Naruto that he was deprived of in the original story.
Minato might be a common character. Since he is Kushina's husband in the original story, his presence can add an interesting dynamic. Also, Jiraiya could be there. He was Naruto's mentor and his interactions with the harem situation could be quite humorous.
Perhaps there is a prophecy in the fanfiction that only Supergirl and Ghost Rider together can fulfill. This prophecy could be related to saving the multiverse from a great evil. They would have to embark on a long and dangerous journey, facing many trials along the way. Their relationship would develop from reluctant allies to true friends, and maybe even more as they grow closer through shared experiences.
In such a fanfiction, the relationship between Naruto and Kushina would be one of mother - son love and mutual respect. Kushina would be protective of Naruto and proud of the man he has become. Naruto would look up to Kushina and value her wisdom. With Hinata, Naruto's relationship would be that of a loving couple. Hinata would support Naruto in all his endeavors. When it comes to Kushina and Hinata, Kushina would likely see Hinata as a worthy partner for Naruto and Hinata would respect Kushina for being Naruto's mother and a strong kunoichi.
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.