How would Naruto's character develop if he could see the future in fanfiction?

Naruto would become more determined. After seeing the future, he would be set on changing it for the better. For example, if he saw his friends die, he'd be more protective and strategic in his actions.

Sasuke, on the other hand, might be more conflicted. He has his own goals and ideals. If he saw a future that didn't align with what he wanted, he might first question the vision. But ultimately, he could also take steps to change it, especially if it involved the safety of his village or his loved ones like Naruto or Sakura. He has a complex personality, so his reaction would not be straightforward.

If Naruto sees a future where he and Sakura are not as close as they are in the present, he might start to distance himself from her, thinking it's for the best. Or on the other hand, he could try to change the future by being more open and communicative with her. Also, with Sasuke, if he sees a future where Sasuke is in more danger than he thought, he would redouble his efforts to keep Sasuke safe and this would likely deepen their complex relationship.

Naruto's character would likely develop a stronger sense of family loyalty. Growing up in the Uchiha clan under Fugaku's care, he'd be immersed in a culture that highly values family. He might also become more secretive, as the Uchiha often keep their cards close to their chest. This would be a big change from the open - book Naruto we know. Additionally, he could gain a more nuanced understanding of power, since the Uchiha are known for their powerful Sharingan and thirst for strength.

Naruto's development would be interesting. Mei's tough - love approach might make Naruto more independent. He would no longer have the same support system as in Konoha. This would force him to rely on his own instincts and grow as a ninja in different ways.

Naruto's chakra control and combat skills would develop differently. Hanzo was a master of his own unique techniques. Naruto would be trained in those, and perhaps develop his own spin on them. His fighting style might be more stealth - based and less reliant on brute force like his Rasengan - centric style in the original. He would also have a different sense of honor, influenced by Hanzo's code of conduct.

His character could become more complex. He'd have to balance his own values from Konoha with the new ones in the Covenant. This internal struggle would likely make him more mature. For example, he might question his previous beliefs about power and leadership.

His understanding of pain and suffering could deepen. Pein has a complex relationship with pain, and through his training, Naruto could gain a new perspective on it. This might make him more empathetic towards his enemies, or it could fuel his determination to end the cycle of hatred in a different way.

His character would likely be more aggressive. Demons are often seen as violent and forceful, and Naruto raised by them might adopt these traits. He may be quicker to anger and less likely to show mercy in combat.

His character would be more confident and assertive. Kurama's presence would give him a sense of self - worth from the start.