His relationship with Sasuke could change significantly. Sasuke might see Naruto's newfound ability as a threat or, on the other hand, it could be a motivation for him to get stronger. Naruto might use the Hiraishin no Jutsu to try and keep an eye on Sasuke, which could either annoy Sasuke or make him secretly respect Naruto's determination.
With Kakashi, Naruto's relationship could become more of a peer - to - peer. Since Kakashi is known for his Sharingan and various jutsu, Naruto mastering the Hiraishin no Jutsu could put them on more equal footing. Kakashi might become more of a sparring partner and advisor rather than just a teacher. And Naruto could start to teach Kakashi some new tricks he discovers while learning the jutsu.
His friends like Sakura and Shikamaru would also be affected. Sakura might be in awe of Naruto's new ability and see him in a different light. Shikamaru, being the strategic thinker, would start to factor in Naruto's Hiraishin no Jutsu in his plans. This could lead to new team dynamics and more complex interactions among the group as a whole.
With his friends like Sasuke, Naruto's new ability might cause some jealousy at first. Sasuke is always striving to be stronger, and seeing Naruto master such a powerful jutsu could make him feel a bit left behind. But in the long run, it could also motivate Sasuke to improve himself further and their rivalry could become even more intense.
It could improve his relationship with Sasuke. Since Chidori was Sasuke's signature move for a long time, Naruto learning it might show Sasuke that Naruto respects his skills and is willing to incorporate them into his own fighting style. This could lead to a more positive and equal relationship between them. Also, Kakashi might see Naruto in a new light. He trained Sasuke in Chidori, and seeing Naruto master it too could make him realize Naruto's determination and growth even more.
If Naruto creates a very powerful and dangerous jutsu, some characters might be afraid of him. For example, the villagers who were once suspicious of his Nine - Tails power could again start to fear him. However, his close friends like Sasuke and Sakura would likely trust him and help him control and master the new jutsu.
His relationship with Sasuke might become more competitive. Sasuke, seeing Naruto learn such a powerful technique, would strive to become stronger too. This could lead to more intense sparring sessions between them and a bit of friendly rivalry.
With Shikamaru, Naruto's early Rasengan might make Shikamaru more interested in teaming up with him. Shikamaru is smart and he would recognize the potential of having Naruto with his powerful jutsu on their side for missions. So they could form a stronger bond based on mutual respect for each other's abilities.
It could strengthen his relationships. His teammates might be initially wary, but as they see Naruto use explosion alchemy to protect them and complete difficult missions, they grow to trust him even more. For instance, if they are in a battle against a tough opponent and Naruto's new skill saves them, it deepens their bond.
His relationship with his sensei, like Kakashi, could become more complex. Kakashi would feel guilty for not being able to protect Naruto from the experiments. And Naruto might start to question Kakashi's ability to keep him safe. This could lead to a strain in their relationship at first, but later they could grow closer as Kakashi helps Naruto recover from the trauma of the experiments.
With his friends in Konoha, they would be worried and perhaps a bit afraid. They know Orochimaru's reputation as a villain. Naruto's friends like Shikamaru might start to keep a closer eye on him, which Naruto could resent. He would feel like they don't trust him anymore, and this could strain their friendships.
When it comes to his friends like Sakura and Shikamaru, they might initially be shocked. But as time goes on, they would come to rely on Naruto's new ability. For example, in a dangerous mission, Naruto could use the Hiraishin to quickly rescue them, further deepening their friendship and trust in him.
If Naruto has a physical disability like a broken arm that doesn't heal properly in fanfiction, his friends like Sasuke and Sakura would need to step in and help him more. Sasuke might be more protective, which could change their dynamic from a competitive one to a more collaborative one. Sakura could use her medical skills to try and find a way to heal him, which would bring them closer. His relationship with his teachers, like Kakashi, would also change as they'd have to adjust their training methods.