His character could develop in a more assertive way. Instead of just tolerating Naruto's behavior, he might start to set stricter boundaries. This could make him a more respected figure in the Naruto universe within the fanfiction. For example, he could demand more respect from Naruto and others who have been taking his kindness for granted. This would change his image from a laid - back mentor to a more authoritative one.
One possible plot could be that Kakashi has grown weary of Naruto's constant recklessness. Maybe Naruto keeps ignoring Kakashi's training advice and getting into dangerous situations without thinking. So, Kakashi decides to take a step back from mentoring Naruto until Naruto can prove he'll be more responsible.
Kakashi may become more empathetic. By constantly watching over Naruto, he gets to understand Naruto's struggles better, which could make him more in tune with his own emotions and those of others.
Kakashi would become more nurturing. In the original, he was a teacher, but as an adoptive father, he'd have to be more affectionate. He might show his face more often to Naruto, as a sign of trust, and be more open about his emotions.
When Naruto saves Kakashi, it often shows his growth in terms of leadership. He has to take charge of the situation, which is different from his earlier, more impulsive self. For example, if he has to organize a rescue mission, he learns to plan and delegate tasks to others.
Kakashi may become more fatherly. He starts to show more emotions and care, different from his usually aloof self in the original series.
Well, Naruto might be more reserved in Kakashi's generation. He would be among older and more experienced ninjas. He would have to prove himself more quickly. He might not have as much room for his wild and carefree antics as he did in his own generation. He'd be learning from different mentors too, which could shape his jutsu usage and battle strategies in a new way.
In this fanfiction, Naruto could develop his strategic thinking skills. Since Kakashi is a master strategist, by attempting to copy him, Naruto might start to look at battles and challenges from a more calculated perspective. He might learn to analyze his opponents better, like Kakashi does, and use that knowledge to his advantage. This would be a big step in his character growth as he matures from a straightforward fighter to a more well - rounded ninja.
Their relationship would likely become very close. Naruto would probably start to see Kakashi as a father figure. Kakashi, in turn, would become more protective of Naruto.
In this fanfiction, Kakashi's brotherly treatment is a cornerstone for Naruto's growth. Kakashi is like a guiding star for Naruto. He not only teaches Naruto about ninjutsu but also about values. For example, Kakashi might teach Naruto about loyalty and perseverance in a more personal way compared to other mentors. This makes Naruto internalize these values better. Also, Naruto, who has always been longing for family, now has Kakashi as a brother - figure. This gives him a psychological boost, and he becomes more determined to grow into a great ninja to make Kakashi proud.
In this fanfiction, Naruto's character development is multi - faceted. Physically, he becomes stronger and faster through the rigorous training. Mentally, he learns patience. Kakashi's training methods might include waiting for the right moment to strike or endure long periods of stealth. This teaches Naruto to be more patient in combat and in life. Emotionally, he matures. He may face setbacks during the training and learn to deal with failure in a more constructive way. Instead of getting frustrated and giving up, he uses it as a motivation to improve. All these aspects combined shape Naruto into a more well - rounded and capable ninja.