Naruto's character would likely become more reserved. Danzo's training might make him less trusting. He would probably be more calculating in his actions, weighing the benefits for the village more strictly. He might also be more inclined to use force or manipulation to achieve his goals, which is quite different from his original self.
If Naruto was trained by Danzo in fanfiction, his character development would be a wild ride. He would be exposed to Danzo's harsh and often unethical methods. This could make him question his own beliefs. His normally exuberant and positive personality might be dampened. He would have to grapple with the idea of doing whatever it takes for the village, even if it means sacrificing some of his own principles. His relationships with others, like Sasuke and Sakura, would also be affected as he becomes a different kind of ninja under Danzo's training.
Naruto might become more calculating. Since Danzo is known for his strategic thinking, Naruto could pick up on that. He may not be as impulsive as in the original story.
His character would become more complex. He'd likely be more secretive at first, having to keep Danzo's teachings and missions under wraps. But his core values of protecting his friends and the village would still be there, just expressed in different ways as he navigates the morally grey area that comes with being Danzo's apprentice.
His development would be a tug - of - war between Danzo's influence and his own innate goodness. On one hand, Danzo could instill in him a sense of loyalty to the village at all costs. On the other hand, Naruto's natural desire to make friends and bring people together would constantly fight against that. So, his character might be a complex blend of secrecy and warmth.
His personality would probably be more cold and calculating. Danzo's influence would make Naruto less likely to trust others easily.
His view of the world would expand. Naruto, who was mainly focused on the ninja world, would now be exposed to the magical world through Merlin. This would make him more open - minded and understanding of different cultures and powers. He may also start to use his newfound knowledge to try and bring peace not just between ninja villages, but also between the ninja world and the magical realm Merlin comes from.
Naruto's character would develop in several ways. He'd become more patient as Hagoromo's teachings are likely profound and require time to absorb. His sense of responsibility would grow even more. Since Hagoromo has a deep connection to the history of the ninja world, Naruto would also gain a greater respect for the past and traditions. This new - found knowledge would make him a more well - rounded leader, not just a powerful fighter.
Naruto's character development would be multi - faceted. He would become more strategic in his approach to combat. Yamamoto's battle experience and knowledge would be passed on to Naruto, making him a more well - rounded fighter. Emotionally, he might become more reserved in some ways. Since Yamamoto is not as outwardly emotional as Naruto, Naruto would learn to control his emotions better during battle. However, he would still retain his core values of protecting his friends and the village. This new training would just enhance his ability to do so more effectively.
His understanding of the ninja world would expand. He might become more cautious and calculating in battles, as Kaguya's training could expose him to different strategies. Also, he could develop a more solemn side to his personality, considering Kaguya's own complex nature and the heavy knowledge she might share.
His understanding of the ninja world might deepen. Yugao has different experiences compared to his other mentors. So, Naruto could learn about different aspects of the ninja life, like the sacrifices ANBU members make. This would make him more mature in his thinking.
Naruto would become more confident. With Kurama's training, he'd know he has more power and skills at his disposal, so he'd face challenges with less hesitation.