He'd probably be more self - assured. The female Kyuubi could be a strong female figure in his life, giving him confidence. His view of the world might be different, less jaded perhaps.
Naruto's character would likely develop in a more empathetic way. Since the female Kyuubi has her own complex nature, Naruto could grow up understanding different perspectives better. He might also be more in touch with his own emotions and those of others. His ninja skills could be more instinctive as he would have been trained by the Kyuubi from an early age. His development would be a blend of human and tailed - beast characteristics, making him a more well - rounded and powerful character in the fanfiction.
His chakra control would likely be extraordinary. Kyuubi is a huge source of chakra, so Naruto would have had early exposure to vast amounts of it. This could lead to him being able to perform more advanced jutsu at a younger age.
His personality would likely be more fierce. Kyuubi's influence could make him less patient with those who oppose him. He might not be as friendly and naive as in the original Naruto. He'd be more self - reliant, relying on his own and Kyuubi's power rather than seeking help from others.
Naruto's character would develop in a more complex way. He would be influenced by Kyuubi's wisdom and power. Kyuubi could teach Naruto about the true nature of power and how to use it responsibly. This would make Naruto more mature at a younger age. He might also be more introverted as he would be spending a lot of time with Kyuubi, learning from it. But at the same time, he would still have that underlying kindness and determination that is characteristic of him. He would just have a different way of expressing it and using it to achieve his goals.
If Naruto becomes the Kyuubi in the fanfiction, his character development would be a wild ride. He'd start as a regular boy with big dreams, but once he becomes the Kyuubi, he has to face a whole new set of challenges. He has to learn to control his new form and power. This might make him more serious and less carefree as he used to be. He also has to deal with how others perceive him now. Some might fear him, some might worship him. All these things would shape his character in different ways, making him more mature and perhaps a bit more jaded.
His character would likely be more wild and free - spirited. Dragons are not bound by human rules, so Naruto might be less inclined to follow traditional ninja etiquette.
Naruto's character would become much darker. Hidan's influence would make him less empathetic. He might see killing as a more acceptable solution to problems. His dreams of becoming Hokage might be replaced with more self - centered goals like survival or power - seeking.
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 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.
Naruto's character would develop in a very different direction. He'd likely be more stoic and less impulsive. Since Kaguya has a more detached view of the world, Naruto might inherit some of that. He would be more calculating in battles, using his powers in a more precise way rather than relying on his usual head - on approach. His sense of justice might also be warped as he grows up under Kaguya's teachings, which are different from the values he was taught in the original story.