As for the village elders, they might be relieved if they suspected Naruto of being a threat. But if they later find out that Naruto was wrongly accused, they would face criticism from the villagers. Also, Naruto's friends among the younger generation might start to lose faith in the village's justice system if they believe Naruto was unjustly forced to leave as an assassin or something similar.
Kakashi would be worried. He has always been a mentor to Naruto. His departure would make Kakashi feel like he failed in some way. He would probably try to find Naruto to bring him back or at least make sure he's okay. The rest of the Konoha 11 would also be affected. They would miss Naruto's presence and some might even question the village's decision (if there was one) that led to Naruto leaving.
It could lead to political unrest in Konoha. There might be those who blame the village leadership for Naruto's departure. This could lead to power struggles as different factions try to take control and change the way the village is run. Some might demand more transparency and better treatment of their shinobi to prevent such a thing from happening again.
It could create a sense of unease and fear. Naruto is a very powerful ninja, and if he turns dark and leaves, the villagers would be worried about him coming back as an enemy. It might also lead to a decrease in morale among the ninjas who once considered Naruto a friend or ally.
Sakura would be heartbroken. She has deep feelings for Naruto, and his sudden departure would make her feel abandoned. She might initially be angry at him for leaving without saying goodbye but would soon worry about his safety.
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.
His friends would be worried. Sakura might be very concerned about his safety and feel sad that he left. She may also feel guilty if she thinks she could have done something to prevent his departure.
For Naruto, it would be a big shock. He's always seen Sakura as an important part of the team. He would probably feel guilty, thinking he might have done something wrong. Sasuke might be more reserved in his reaction, but deep down, he would also feel the loss. Kakashi would be worried about her safety. The other ninja in Konoha might start to question the unity of the village if someone like Sakura, who was so well - known, left. And the young ninja who looked up to Sakura would be disappointed and might even lose some motivation in their training.
For Sakura, it could be a huge emotional blow. She might feel abandoned and be motivated to become stronger herself to bring them back. Also, she might have to step up in their absence and take on more responsibilities in the village.
Well, their friends in Konoha would be really sad. For Naruto, his friends like Sakura and Shikamaru would feel betrayed at first. They might not understand why he left without saying much. But later, they might start to suspect that there are deeper reasons and some of them might even try to find out the truth and support Naruto from afar.
Sakura would be deeply affected. She has been Naruto's friend and teammate for a long time. His departure would make her feel guilty, thinking that she could have done something to prevent it. She might also worry about his safety out there alone.
Well, it would be a big loss for Konoha. Naruto is a powerful ninja, and his absence would mean one less strong fighter to defend the village. Ino, too, has her unique skills in mind - related jutsu and communication. Their departure might also lower the morale of other ninja, especially those who were friends with them or looked up to them.