It would likely make his relationship with Iruka even more important. Iruka was one of the first to show Naruto kindness, and with his parents' absence, he would cling to Iruka as a father figure even more. Naruto might also be more eager to prove himself to his peers. He would want to show that he doesn't need his parents and can be just as good or better than those with a normal family. This could lead to some over - competitiveness at times.
His relationships with his peers can become more intense. For example, with Iruka - sensei, Naruto might cling to him more as a father figure. With his teammates, he may be overly eager to prove himself worthy of their friendship. He could be more sensitive to any signs of rejection from them.
It might make him more distant from his friends at first. He could be so consumed by his anger towards his parents that he withdraws from his usual social circle. For example, he might avoid spending time with Sasuke or Sakura because he is too preoccupied with his feelings about his parents.
With his friends like Sakura and Kakashi, they would be very curious. Sakura might try to study Naruto's Pokemon bloodline to understand how it works. Kakashi, on the other hand, would be more focused on how to train Naruto to control these new powers. It could bring them closer as they all try to figure out the implications of this new development in Naruto's abilities.
His relationships might be less intense in some ways. Since he has a family, he might not be as clingy to his friends like Sasuke. For example, he wouldn't be as desperate to bring Sasuke back because he has his parents' support at home.
Well, in such fanfiction, Harry's neglect by his parents can cause him to have a deep - seated fear of abandonment in his friendships. This could lead to him constantly testing his friends' loyalty. On the other hand, his friends, if they are true friends, will be more patient with him and try to show him unconditional love, which in turn can strengthen their relationships in the long run.
On the positive side, it could bring him closer to those who also have issues with his father or the old ways. There might be some characters who have been wronged by Naruto's father's decisions in the past. Naruto's hatred could make them form an alliance of sorts, united by their shared negative feelings. However, overall, it would likely cause more problems than benefits in his relationships.
It would likely make his relationships very strained. He might be constantly suspicious of people's motives, thinking they will abandon him too. For example, he might have a hard time getting close to his peers like Sasuke and Sakura. He could see any kindness as a potential trap or something that will be taken away from him in the end.
It might actually strengthen his relationships in some ways. His friends could see him as an even more powerful ally. Naruto, with these new powers, could protect them better. Sakura, for instance, would feel safer around him and this could lead to a deeper bond of trust between them.
Well, it really depends on how the fanfiction portrays it. If Naruto absorbs his dark emotions in a way that makes him seem cold or emotionless, it could strain his relationships. His friends are used to his passionate and sometimes impulsive self. But if he manages to balance it well, it could also make him a better listener and friend. He'd be able to offer more rational advice and support without being clouded by his own negative feelings.
If Naruto got a new bloodline in the fanfiction, it could strengthen his relationship with Sasuke. Sasuke, always interested in power, might be intrigued by Naruto's new abilities and see him in a new light. They could start training together again to understand and master the bloodline, which would bring them closer as friends and rivals.