One possible plot could be that Naruto discovers some dark secrets about Konoha's leadership. For example, he might find out that they were involved in unethical experiments in the past. This discovery could make him feel betrayed first, and then lead him to take actions that Konoha sees as betrayal, like refusing to follow orders or even teaming up with an enemy of Konoha who he believes has a more just cause.
The Konoha elders could be the main antagonists. They are often shown to be quite traditional and set in their ways in the original series. If Naruto goes against their old - fashioned ideas about the village's future and ninja code, they would likely oppose him strongly and could be the driving force behind making Naruto an outcast, which in turn could lead to his 'betrayal'.
One possible reason could be that Naruto discovers some dark secrets within Konoha. Maybe he finds out that the village elders have been using him all along, not truly caring about his well - being but only his power as a Jinchuriki. This realization could be so shocking that he decides to turn against the village.
Naruto might initially try to reason with those who betrayed him. He would want to understand why they did it. But if they refuse to listen or continue to be hostile, he would start to distance himself from Konoha. He could become a lone wolf, using his skills and power to survive on his own while still trying to figure out how to clear his name and get revenge if necessary. He would also likely feel a sense of betrayal towards the friends he thought he had in Konoha.
Konoha would likely see him as a major threat. They would mobilize all their resources to stop him. This could lead to epic battles between Naruto and the shinobi of Konoha. In the process, a lot of destruction could occur in and around the village.
The storyline would likely start with Naruto's disillusionment with Konoha. His actions would then shock his friends. Sasuke, for example, might initially be confused but then choose a side. There would be intense battles within the village as Naruto tries to fight against the forces that he now opposes. His former friends and comrades would be torn between loyalty to the village and their friendship with Naruto.
At first, Naruto would likely be extremely shocked. He has always considered Sakura a friend and teammate, so this would be a huge blow. He might question his own judgment in trusting her.
However, Naruto also has a big heart. In the long run, he would probably try to find a way to save Kakashi or bring him back to the right side. He wouldn't give up on Kakashi easily, believing that there must be some underlying reason for his actions and that he can be redeemed.
The 'The Sealmaster of Konoha' Naruto fanfic is likely to be an interesting piece of fan - created work. It probably focuses on a character who is a sealmaster in the village of Konoha. Fanfics like this often explore new abilities, relationships, and storylines within the Naruto universe. For example, the sealmaster could have unique sealing techniques that help in battles or protecting the village.
Maybe in the fanfic, Naruto has faced too many political intrigues within Konoha. He has always been loyal to the village, but if he constantly encounters backstabbing or unfair treatment from some of the village's leadership or clans, it could lead to his weariness.