They could be more confident. For example, Hinata might be less shy since she has the experience of her past life. Naruto could be more strategic from the get - go, having learned from his previous battles.
In this fanfiction, Naruto and Hinata might have different personalities. Maybe Naruto is more laid - back as he has already achieved peace in his past life and now just wants to enjoy his new life with Hinata. Hinata could be more assertive, not hesitating to speak her mind. Their physical appearances might also change slightly, like Naruto having a different hairstyle or Hinata having a new mark on her body that is related to her new powers.
Naruto would likely be more confident earlier. With Kyuubi as a sort of mentor - figure, he wouldn't have to face as much ridicule from the village. He'd probably have a better understanding of his own power and how to control it, making him a more formidable ninja from a younger age. As for Hinata, she might be less shy. Kyuubi's influence could give her the courage to speak up more and be more assertive, not just in her relationship with Naruto but also in general ninja affairs.
The child in the fanfiction could be different in terms of their goals. Naruto always dreamed of becoming Hokage to gain recognition. Their child, on the other hand, might be more interested in exploring the world outside the Hidden Leaf Village. Maybe they want to learn about different ninja cultures and techniques. This could lead to a story where they set out on a journey, with Naruto and Hinata being a bit hesitant at first but eventually supporting their child's dreams. And along the way, the child could encounter new friends and enemies, and develop their skills in ways that neither Naruto nor Hinata had expected.
In the original series, Sakura was in love with Sasuke. But in a fanfiction where Naruto is married to Hinata, Sakura's reaction could be one of pure friendship. She might be happy for Naruto and Hinata because she sees how they are good for each other. For example, Hinata is very gentle and supportive of Naruto, which is different from Sakura's more headstrong relationship with Sasuke.
In a fanfiction where Naruto is a rurouni meeting Hinata, their interaction would have a different dynamic. Canon Naruto was always in a rush, trying to achieve his goals. As a rurouni, he's more laid - back. So when he meets Hinata, he might actually take the time to have a long, deep conversation with her. They could talk about things like their dreams for the future of Konoha, or their personal insecurities. This would be very different from the quick exchanges they had in the original story.
In Gothic Naruto fanfiction, characters may have different physical appearances. Their clothing could be more in line with Gothic fashion. Naruto might wear a long, black cloak instead of his orange jumpsuit. And their facial expressions could be more somber. Emotionally, they could be more tortured souls. Hinata might not be the shy, love - struck girl but a more haunted figure, perhaps due to some family curse that is explored in this Gothic version.
In the original Naruto story, Naruto is mainly focused on becoming Hokage and bringing peace to the village. However, in a 'Naruto is a Uchiha death fanfiction', Naruto's character arc might revolve around the Uchiha deaths. For instance, he could be more involved in uncovering the truth behind the Uchiha massacre or trying to prevent further Uchiha deaths.
Well, Naruto's Cyclops power in fanfiction could be different in many ways. Firstly, the appearance of the power might be distinct. The color or intensity of the beam he shoots from his eyes could be altered. Also, the power might be linked to his chakra system in a unique way. Since Naruto has his own chakra - based abilities like the Rasengan, his Cyclops - like power could be combined with his existing skills, which is very different from how the original Cyclops uses his power in the X - Men comics.
Naruto's ability to use the Nine - Tails' chakra could turn into something like having a powerful spiritual beast companion in the Bleach world. Hinata's Byakugan could be enhanced to see spiritual auras more clearly and detect hidden spiritual threats. Their powers would also be influenced by the fact that they are now in a world with Shinigami, Hollows, and Quincy. They might learn new techniques from the Bleach characters and combine them with their own unique abilities.
The original Naruto plot focuses a lot on Naruto's growth within the framework of the ninja villages and his relationships with his friends and mentors. In a fanfiction with Shinju and Kaguya, the scope would be much larger. Naruto could be on a journey that takes him across different dimensions or time periods related to the Shinju and Kaguya. The fanfiction could also introduce new characters or races that are related to the Shinju or were once under Kaguya's rule. This would completely change the feel of the story, making it more of an epic adventure on a cosmic scale rather than just a story about a ninja's growth in a village.
Well, in the original storyline, there might not be a character named Kakuza at all. So right off the bat, this is a new addition. If Naruto kills Kakuza in the fanfiction, it would show a darker side of Naruto perhaps. In the original, Naruto is always about redemption and saving his enemies. But here, if he kills, it's a deviation from his usual character trait.