When Naruto becomes the Nine - Tails in fanfiction, his life is completely transformed. Socially, he might be isolated at first because others are intimidated by his new form. Emotionally, he has to come to terms with being a part - fox, part - human entity. He might have new memories or instincts that he has to learn to control. Physically, he has the power to destroy or protect on a massive scale. His daily life would be different as he has to adapt to his new body and powers, and he would have to find a new balance in his relationships with Sasuke, Sakura, and the rest of the village.
Naruto's relationship with his friends undergoes significant changes. His closest friends like Kakashi would be on high alert. Kakashi would constantly be watching Naruto to make sure he doesn't lose control. With his peers, some might start to distance themselves, fearing the unpredictable nature of the Nine Tails' power. However, true friends like Rock Lee would see it as an opportunity for Naruto to grow stronger. Lee might encourage Naruto to master the Nine Tails' power and use it for good. Naruto's relationship with his friends becomes a complex web of trust, fear, and support as he deals with the Nine Tails' possession.
His personality could become more aggressive. The Nine - tails' instincts might seep into Naruto, making him quicker to anger. For example, he might not tolerate insults or threats to his village as passively as before.
He may become more aggressive. The power of the nine - tails can influence his normal calm and determined self, making him more likely to act on impulse and attack first without thinking too much about the consequences.
His life changes drastically. Firstly, his social status within the village would be very different. People might fear him initially. His relationships with friends like Sasuke and Sakura would also be affected. They would have to adapt to this new Naruto. His training regime would change completely as he has to learn to control his new bijuu form. He might have to isolate himself at times to avoid causing harm.
At first, Naruto might see the Nine - Tails as just a source of power, something that makes him strong. But as he grows, he starts to see it as a part of himself, an entity with its own feelings and history.
His power level would skyrocket. Naruto already had the power of the Kyuubi within him, but as a kitsune, he'd have a more direct connection to that power. He could access it more easily and use it in ways he couldn't before. For instance, he might be able to transform into a full - kitsune form with ease, and in that form, his speed, strength, and durability would be greatly enhanced.
Naruto might become more calculating. Since Mewtwo is very intelligent and has powerful psychic abilities, Naruto would have to use his mind more. He would think before acting, unlike his impulsive self in the original series. This change could make him a better strategist in battles, but it could also lead to misunderstandings with his friends who are used to his more straightforward and impulsive nature.
Naruto's personality could shift towards being more reserved. As a Shinigami, he has to deal with the weight of handling souls and the concept of death. This could make him think twice before acting impulsively like he used to. He may also develop a more empathetic side towards those who are about to die or have lost loved ones, as he now has a closer connection to the afterlife.
Naruto's character would change in several ways. Firstly, he would become more strategic. As a lord, he has to plan for the long - term development of his land, which requires thinking ahead. His impulsiveness would be curbed as he has to deal with the complex web of politics. He would also grow in terms of wisdom. He would learn from his experiences and the advice of his advisors. His charisma would be used in a different way. Instead of just inspiring his ninja comrades, he would need to inspire all his people. His sense of justice would expand from individual cases to the overall fairness of his domain, and he would strive to make his territory a model of a just society.
He becomes more serious. Gone is the Naruto who is always cracking jokes.