If Naruto were Hiruzen's son in a fanfiction, his character development would take a whole new turn. He'd grow up with a different set of values instilled in him. He might be more diplomatic from the start, having been exposed to Hiruzen's leadership style. His motivation to become Hokage might be less about seeking recognition and more about following in his father's footsteps. Also, his relationship with the village elders would be different. Instead of being an outcast, he'd be seen as the heir, which would bring its own set of challenges and opportunities for growth.
His character would likely be more refined. With the Sarutobi clan's influence, he'd have better access to knowledge and proper guidance. He might not be as brash as in the original story. For example, he'd learn the importance of diplomacy and strategy earlier.
His character development would be very different. For starters, he might not have the same drive to prove himself. Since he would be the son of a highly respected founder, he would already have a certain status. However, he could still face challenges related to living up to his father's legacy.
Naruto's jutsu repertoire would be different. Hiruzen could teach him some of his own signature jutsu or long - forgotten techniques. This would make Naruto stand out even more in combat. He might also be better at taijutsu as Hiruzen could have trained him in more traditional and refined forms of hand - to - hand combat. His overall combat style would be more refined and less reliant on brute force. This new - found finesse in combat would earn him more respect from his peers and opponents alike.
Naruto might be more knowledgeable about the history and politics of the village. Hiruzen, being the Hokage, would surely educate Naruto on such matters. This would make Naruto more diplomatic and better able to handle complex village - related issues. He would also be more respectful of traditions and the hierarchy within the village, having been raised by the village's leader.
Naruto's view of family would be different. Instead of longing for a family like in the original story, he would have a real family with Sarutobi. This would change his motivation. Instead of wanting to be Hokage to gain recognition, he might want to be Hokage to continue Sarutobi's legacy and protect the family he now has in the village.
Naruto's social skills would also be different. Instead of being the lonely outcast, he would be part of a family. He would interact with other ninja kids in a more positive way. His parents could also guide him in making friends. He might be more diplomatic in his relationships because he has seen how his father, as the Hokage, dealt with people. This would all contribute to a very different Naruto compared to the one we know from the original series.
Naruto would become more well - rounded. With Hiruzen's training, he'd gain more discipline. In the original, Naruto was a bit of a wild card. But under Hiruzen, he'd learn to control his impulses better. For example, in battles, he'd think more strategically instead of just charging in.
Well, a plot twist could be that since Naruto is Hiruzen's son, the Akatsuki targets him differently. Instead of going after the Nine - Tails inside him in the usual way, they might try to use his relationship with Hiruzen against him. They could try to blackmail Hiruzen into making certain concessions for the safety of his son. Also, Naruto's training might be more intense and different. He might be taught more about the political side of being a ninja by Hiruzen himself, which changes his perspective on the ninja world.
Since Kakashi has his own set of friends and allies, Naruto would be exposed to a different social circle. This could lead to different relationships and interactions that shape his character. For example, he might have a closer relationship with Gai or Asuma in this fanfiction. Their influence, combined with Kakashi's parenting, would make Naruto more well - rounded and perhaps more in - tune with the overall shinobi community.
Naruto would likely be more confident from the start. Knowing he is the son of Hashirama, a great Hokage, would give him a sense of self - worth that he initially lacked in the original series. He might not be as much of an outcast, or at least he would have a different kind of status in the village.