If Naruto were trained by Enma in a fanfiction, his character would develop in several ways. Firstly, he'd gain more self - control over his powers. Enma could teach him how to better manage the Nine - Tails' chakra, making him less likely to lose control. Secondly, Naruto would become more in tune with nature. Enma, being a part of the toad world, could show Naruto how to draw strength from nature, just like in Sage Mode. This would not only enhance his power but also give him a deeper understanding of the world around him. Moreover, Naruto would become more respected among the toads, which could boost his confidence and leadership skills.
Well, one possibility could be that Naruto gains unique combat skills. Enma might teach Naruto how to better utilize his chakra in more beast - like ways, since Enma has his own powerful chakra. Naruto could learn new forms of attack and defense, perhaps even a special jutsu inspired by Enma's own abilities.
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.
Naruto would likely become more patient. Kurenai's training methods might force him to slow down and think more carefully, which is different from his usual impulsive self. This could lead to him making better decisions in battles.
His understanding of the Uchiha and the darker side of the ninja world would deepen. Itachi would share his experiences, and Naruto would gain a more nuanced view. This might make him more empathetic towards enemies. Also, his combat skills would diversify. He could incorporate Itachi - like precision and speed into his fighting style, becoming a more well - rounded ninja.
Naruto would probably become more disciplined. His impulsive nature might be tempered by Mifune's strict training regime.