Naruto would likely become more secretive. Since Orochimaru is a very private and often devious character, Naruto might pick up some of those traits. He would probably keep things from his friends more often.
Naruto may also become more independent in a different way. While he has always been a bit of a lone wolf in terms of his determination, under Orochimaru he would have to rely more on his own instincts and less on the support of the village. This could make him more self - reliant but also more isolated until he figures out how to reconcile his new life with his old relationships.
They would develop in terms of their skills. Under Orochimaru, they would gain a lot of knowledge about chakra manipulation and forbidden jutsu. But with Naruto, they would learn about the power of bonds and friendship. This combination could lead to the development of new jutsu that combines both physical power and the strength of relationships. Also, they would grow in their understanding of right and wrong, as Naruto's moral compass would constantly be in conflict with Orochimaru's more amoral stance.
Naruto's character would likely be darker. Orochimaru is known for his unethical experiments and thirst for power. Naruto, under his tutelage, might be more focused on individual strength rather than the bonds he values in the original series. He could become more secretive and less trusting of others.
Naruto would likely become more secretive. Since Orochimaru's training methods are often not in line with Konoha's values, Naruto would have to hide what he's learning. He might also become more distrustful of others as Orochimaru could instill in him the idea that everyone is out to get him for his newfound power.
Naruto's character development could be significantly altered. If Orochimaru saves him, Naruto may start to question his own beliefs about redemption. He has always believed in giving second chances, but being saved by Orochimaru could test the limits of that belief. He might struggle with whether Orochimaru can truly be redeemed or if he is just using Naruto. This internal struggle could make Naruto more introspective and less impulsive. He may also become more cautious in his relationships, not wanting to be used again. And his view of power might change too. He could see that power can be used in different ways, not just for good like he always thought, which would add more depth to his character.
It makes Naruto seem more mysterious. Since Orochimaru is a rather enigmatic and often villainous character, Naruto looking like him in the fanfiction gives him an air of mystery that he doesn't typically have in the original series. People reading the fanfiction might start to question Naruto's true nature.
Well, Naruto might become more like Kakashi in terms of his combat style. He could start using more strategic moves rather than relying solely on his brute strength. This would make him a more well - rounded ninja.
In such a fanfiction, Naruto's character development would be completely different. He would probably grow up with a sense of isolation. Since Orochimaru was an outcast, Naruto might face similar situations. This could make him more cynical about the world around him. However, Naruto's inherent goodness might also make him try to break away from Orochimaru's shadow. He might strive to prove that he is not like his brother, which could lead to a very different kind of hero's journey compared to the original Naruto story.
Naruto could develop a new sense of determination. He might be determined to not let Orochimaru's experiments define him. Instead, he could use what has happened as a motivation to become stronger in his own way. He may also start to study more about the type of experiments Orochimaru was doing, not to replicate them, but to find ways to counter any future threats related to that kind of science.
Naruto would likely be more cunning. Since Orochimaru is known for his devious ways, Naruto might inherit some of that. He could be more calculating in battles rather than just relying on brute force. However, he would still have his core of kindness. So, it would be an interesting mix of Orochimaru's slyness and Naruto's big - heartedness.
Naruto's morality could be somewhat skewed. Orochimaru has a very different view on right and wrong compared to Naruto. So, Naruto might start to question some of his previous beliefs. For example, he might be more willing to use dangerous or forbidden jutsus if it means achieving his goals. He'd also probably be more distrustful of others, as Orochimaru always has ulterior motives. This would be a big change from the Naruto who was always so quick to trust and befriend people.