His character development would take a very dark turn. Growing up with Orochimaru, Naruto would not have the same values. He would not experience the discrimination in Konoha that, in the original story, motivated him to prove himself. Instead, he would be exposed to Orochimaru's twisted experiments and ideas. Naruto might become more introverted and distrustful. He wouldn't have the same bonds with his peers. His ninja way would not be about protecting the village and his friends but rather about serving Orochimaru's purposes. His personality could be more subdued and less exuberant, as Orochimaru's environment is not one that encourages free - spiritedness or kindness.
Naruto's character would be completely different. Instead of growing up in Konoha with the love and hate of the villagers, he would be under Orochimaru's influence. He might be more cold and calculating, as Orochimaru is not one to promote positive emotions like friendship. He could be trained to be a ruthless assassin rather than a hero who wants to protect everyone.
Sakura would be worried sick. She might immediately inform Kakashi sensei and the rest of the village. Then, she would probably want to be part of the rescue mission. Sakura has grown stronger over time and would use her medical ninjutsu and combat skills to help save Naruto. She would also be constantly worried about Naruto's well - being and would encourage the others to move faster.
If Naruto was kidnapped by Orochimaru at birth, the entire Naruto universe would be drastically different. Konoha would lose its Jinchuriki, which could lead to a power imbalance. Without Naruto, the Nine - Tailed Fox's power couldn't be harnessed for the village's protection. Also, Orochimaru might have used Naruto's Uzumaki heritage and the power of the Nine - Tails for his own dark experiments. This could have led to the creation of more powerful and dangerous entities. His Akatsuki plans might also be affected as Naruto was a key part of their overall scheme.
Naruto would be angry. He's not the type to just accept being kidnapped. He'd immediately start looking for ways to escape. He might try to use his ninja skills to break free from whatever restraints Orochimaru has put on him.
Naruto's character development in this fanfiction would be complex. He'd probably grow up with a sense of superiority due to Orochimaru's powerful teachings. But at the same time, he'd lack the warmth and compassion that came from his relationships in Konoha. He might be more self - centered, focused on his own power and survival. He may not have the same sense of justice as in the original Naruto, as Orochimaru's motives are not in line with the general good. And his relationship with his peers would be more of a power struggle. He might not form the same deep friendships, but rather see others as either tools or threats.
Naruto's character would likely become more conflicted. He has always been on the side of good, and joining Orochimaru, even if for a good reason, would put him in a morally gray area. His view of power might change as he is exposed to Orochimaru's unorthodox ways of obtaining it.
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's character would likely become more complex. With Orochimaru as his guardian, he'd be exposed to different ways of thinking. He might become more cautious, as Orochimaru is a master of manipulation. But he'd also learn a great deal about jutsu and ninja history. His view of the world might expand, and he could become more understanding of the gray areas in the ninja world.
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.
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.