His relationships would be affected. His friends might be worried about the contract and what it means for Naruto. They could be concerned that Sebastian has some ulterior motives. Naruto would have to balance his loyalty to his friends with the obligations of the contract with Sebastian.
Naruto's journey would take a different turn. Instead of just following the path of a ninja, he would be involved in a more complex web of events related to the contract. He might have to travel to different realms or deal with supernatural entities that he wouldn't have encountered otherwise. His goal might shift from just becoming Hokage to also fulfilling the terms of the contract while protecting his world from any new threats that come with the association with Sebastian.
Naruto's power level would change significantly. He could access Sebastian's demonic powers, which would give him an edge in battles. This would also change how his enemies perceive him. They might be more afraid of him now that he has this new, unknown power source.
His relationship with Sasuke might become more complex. Sasuke, who has always been somewhat cold - natured, could be either drawn to Naruto's fiery energy or feel threatened by it. Sakura might be more cautious around him at first, afraid of getting burned. But as she realizes Naruto's good heart beneath the fire, she could become more protective of him.
In a fanfiction where Naruto refuses the toad contract, it would be a major divergence from the original story. His character development would take a different path. Instead of having the toad - related adventures and learning experiences, he could be delving deeper into his own latent abilities. This could lead to him having a more unique and unorthodox fighting style. His interactions with the Hidden Leaf Village and other ninja villages might also change as he is no longer associated with the toads. There could be new rivalries and friendships based on this new path he has chosen, and it could also have an impact on how the other characters view him, as he is breaking away from a long - established tradition within the ninja world.
Well, Naruto might gain some of Sebastian's powers. For example, Sebastian is very good at combat and has some dark magic abilities. Naruto could use these new powers to fight stronger enemies in his own world. Maybe he could even use Sebastian's butler skills to be more stealthy during missions.
In a Naruto fanfic where he's made of chakra, his growth and development would be unique. He might not need to eat or sleep in the same way as normal humans in the Naruto world. This could free up a lot of time for him to train or explore. Also, his connection to nature chakra could be even stronger, as he is already a being of pure chakra. This could lead to him developing new and powerful Sage Mode variants that are exclusive to his chakra - made form.
His story would change a great deal. For one, his living environment would be among the Akatsuki members. This means he'd be surrounded by different types of ninjas with different motives. He might not have that lonely childhood he had in the original story. Konan could give him a more stable family - like feeling. And his skills would be different. He'd likely be more proficient in paper - based techniques.
Well, his journey would be completely different. Instead of following the traditional ninja path, he'd be on a journey to understand and master his new naga abilities. His goals might shift from protecting the village in the normal way to perhaps protecting a new community of naga or finding a way to co - exist between humans and nagas.
If Naruto had 3 siblings, his loneliness as a child would have been much less. He would have had a support system from the start. His siblings could have helped him train, so he might have become stronger faster. For example, they could have sparred with him regularly. Also, in the story, when facing challenges like the Akatsuki, his siblings could have joined forces with him, making the battles more balanced and potentially having different outcomes.
Naruto's story would be drastically different. He would probably have a different goal in life. Instead of seeking the village's recognition as he originally did, he might be more focused on restoring the Uchiha clan's honor. His friends would also be different. He'd be closer to the remaining Uchiha members and might not form the same bonds with the people like Shikamaru or Choji. His ninja path would be more centered around the Uchiha's secrets and powers.
His combat style would change. He'd likely incorporate more animal - like movements inspired by Inutaisho. Instead of just relying on the Rasengan and shadow clones, he could use his new - found heritage to create unique jutsu. For example, he might develop a jutsu that mimics Inutaisho's powerful claws.
Naruto's story would change in many ways. For one, he would have different people to learn from. His teammates could teach him things that Sasuke or Sakura couldn't. Also, the team's goals might be different, leading Naruto to pursue different objectives.