Sakura would probably be very worried. She has always cared about Naruto deep down, so she might be constantly trying to find a way to bring him back. Kakashi, on the other hand, would likely understand Naruto's reasons to some extent. He might be sad but also respect Naruto's decision. As for Sasuke, if he is in the village at the time, he could be conflicted. He and Naruto have a complex relationship, and Naruto's leaving might make him realize how much Naruto actually means to him.
Iruka would be one of the most affected. He was like a father figure to Naruto. He would probably feel that he failed Naruto in some way. He might try to convince the village elders to make changes so that Naruto could return. The other ninja in Naruto's age group, like Shikamaru and Kiba, would also be concerned. They would miss Naruto's presence during missions and his positive energy. They might even plan to go after Naruto to bring him back, but not without some internal debates about whether it's the right thing to do.
The villagers would have mixed reactions. Some of the older villagers who have always been skeptical of Naruto might think it's for the best. But the younger generation, who have grown up with Naruto and seen his heroics, would be devastated. They might start to question the village's leadership and the reasons that led to Naruto's departure. And Hinata, she would be heartbroken. She has always loved Naruto from afar, and his leaving would leave a huge void in her life.
In Shikanaru's fanfic, Naruto might leave Konoha because he feels restricted by the village's rules and traditions. He has always been a bit of an outcast, and leaving could be his way of finding true freedom. The story could follow his adventures in different lands, his attempts to build a new life, and his constant internal struggle between missing his old friends in Konoha and his newfound independence.
Sasuke might be more understanding. Given his own experiences of leaving Konoha, he could respect Naruto's decision. However, he might also secretly plan to keep an eye on Naruto from afar to make sure he is safe.
Sasuke might initially be shocked. He has always seen Sakura as someone connected to Konoha, so her leaving would be unexpected. He could be concerned about her safety, especially if she leaves without proper preparation or protection.
Naruto would be devastated. He has always considered Sakura as a dear friend and teammate. He would probably try to convince her to come back at first. If that fails, he might see it as his mission to bring her back by force if necessary, believing that she has been led astray. Sasuke, on the other hand, might have a more complex reaction. He has his own issues with Konoha, so he might understand Sakura's desire to leave on some level, but he would also be suspicious of her motives for joining Akatsuki.
Their relationship could start as comrades on a mission. As they leave Konoha together, they'll have to rely on each other. Naruto's sunny personality might gradually break through Samui's more reserved nature. They could start sharing their pasts, with Naruto talking about his lonely childhood in Konoha and Samui sharing about her life in the Cloud Village. This sharing would bring them closer, and they might develop a deep friendship at first, which could potentially turn into something more romantic as they face more and more challenges together.
The kids in Konoha like Naruto would probably be very excited. They love new and different things, and Harry with his magic would be really cool to them.
Konoha's power structure could be affected. Naruto is one of the strongest shinobi in the village. Without him, the village might be more vulnerable to attacks from other villages or threats. They would need to quickly find ways to fill the gap in their defenses.
Naruto would likely be extremely hurt. He has always considered the Konoha 11 as his friends and comrades. So, at first, he would probably be in denial, trying to figure out what went wrong. He might try to talk to them, to understand their reasons.
Naruto would probably be conflicted. On one hand, he has a deep love for Konoha, his home. But on the other hand, he might have been hurt by the past events that led to his departure. He could initially be hesitant, but eventually be swayed by the thought of seeing his friends again.
Hinata would be heartbroken at first. Naruto is someone she deeply cares about. But she's also a strong - willed ninja. So she might start by trying to understand why Naruto left. She could look for clues in the village or talk to Naruto's friends to figure out his possible destination.