Naruto becoming a Sekirei in fanfiction would mean big changes for his power level. Sekirei have their own power system which is different from chakra. Naruto would have to learn to control this new power source. His chakra reserves are already huge, but as a Sekirei, he might have access to an even greater amount of energy. This could make him one of the most powerful beings in both the Naruto and Sekirei universes combined. He would also have to adapt to the social structure of the Sekirei world, which is based on the concept of Ashikabi and Sekirei pairs, and this could lead to some really interesting storylines.
Physically, Naruto would likely gain the characteristic features of a Sekirei. This could include wings, different colored eyes, or some sort of unique markings on his body. His fighting style would also change. Instead of relying solely on ninjutsu and taijutsu, he would start to use Sekirei - like abilities such as energy blasts or enhanced speed and agility.
Well, first off, Naruto's physical abilities would be on a whole new level. His strength would be enough to lift and throw huge objects with ease, much like the Ghost Rider can. His speed would be enhanced so that he could move faster than the eye can see. In terms of his abilities, the transformation into the Ghost Rider would likely give him new ways to sense enemies. The hellfire would not only be a weapon but also a tool for detection. Naruto's values might also be challenged. He has always been about protecting the weak and bringing peace, but the Ghost Rider's nature of vengeance could conflict with that. However, he could also use the new powers to better protect his village and those he loves. For example, the hellfire could be used to create barriers to protect against attacks, and his newfound strength could be used to defend against powerful enemies that his normal ninja skills might not be able to handle.
One major change would be in Naruto's understanding of sacrifice. Itachi sacrificed a lot for the village, including his own reputation. Naruto, as his apprentice, would be exposed to this concept on a deeper level. He would learn that sometimes doing the right thing means making personal sacrifices. This would add a new layer to Naruto's character. He would not only be the loud, determined ninja but also someone who could make tough choices for the greater good, like Itachi did.
He'd likely become more of an enigma. His friends might find it hard to relate to him as his powers would be so different. He could become more solitary, like a dragon guarding its hoard, but also more powerful and feared.
His relationship with Sasuke would be very different. Sasuke might be more cautious around Naruto, seeing him as an even greater force. But at the same time, he would also be intrigued by Naruto's new power and might seek to understand it better, which could lead to a new level of cooperation between them.
Naruto's chakra could potentially enhance the Sekirei abilities. For instance, if a Sekirei has a power related to speed, Naruto could use his chakra to further boost that speed. His Rasengan could also be modified when combined with a Sekirei's power. Maybe it could take on new forms or have additional effects.
The plot could involve Naruto characters somehow ending up in the Sekirei world. Maybe Naruto, with his never - give - up attitude, would get involved in the Sekirei battles. He could use his ninja skills to protect the Sekirei from other dangerous forces. And perhaps some of the Sekirei would be intrigued by Naruto's chakra and his unique abilities.
It might not be extremely popular. While both Naruto and Sekirei have their own large fanbases, combining them in a fanfiction in this way is a rather niche idea. Many fans of each series are more focused on the original storylines, characters, and lore of their respective shows. However, there are always some fans who enjoy exploring crossovers and unique interpretations, so it could have a small following among those who like to think outside the box in fanfiction.
He would face political challenges. Naruto is used to the relatively straightforward hierarchy in the ninja world. As a daimyo, he has to deal with complex political intrigue among the nobles and different factions. For example, there could be groups vying for power and trying to manipulate him.
Naruto as a Terminator might become a symbol of hope. In a world filled with the fear of machines taking over, his human spirit and ninja ethics would set him apart. He could lead a resistance against the Terminators that have gone rogue. He would use his combination of chakra - powered attacks and Terminator - like strength and durability to fight for the freedom of the humans in that world. He could also try to find a way to co - exist between the two different types of beings, machines and humans, just as he tries to find harmony between different ninja clans in his own world.
She would gain a new sense of self - reliance. In the Harry Potter books, she had Harry and Ron to rely on. But as a hitwoman in the KHR fanfic, she'd be on her own most of the time. This would force her to trust her own instincts more. She'd have to make quick decisions without the input of others, and this would shape her into a more independent and perhaps even more dangerous character.