In some fanfictions, Naruto might be exiled due to a misunderstanding about his connection with a dangerous entity. Suppose there's a new, menacing force in the Naruto universe and Naruto is wrongly suspected of having an alliance with it. This could lead to his exile from Konoha. Additionally, his unorthodox training methods or new jutsu that are not understood by the traditional shinobi in Konoha could be seen as a threat. They might fear that these unknown elements could bring harm to the village, so they choose to exile him rather than trying to understand.
It could be because of his heritage. If in the fanfiction, new information comes to light about his family that is seen in a negative light by the villagers or the ruling class of Konoha. For instance, if it's revealed that his father or some other relative had committed some great wrong in the past and the village decides to hold Naruto accountable for it, they could exile him. Also, if Naruto starts to question the long - established traditions and power structures in Konoha too openly, the authorities may view him as a troublemaker and exile him to maintain the status quo.
One reason could be false accusations. Maybe some powerful individuals in Konoha frame Naruto for a serious crime he didn't commit. For example, they could plant evidence that he was involved in a plot against the village leaders. Another reason might be the fear of his power. If his strength grows too rapidly and uncontrollably in the fanfiction, the elders or some conservative forces in Konoha may decide to exile him to prevent any potential disasters. Also, political intrigue could play a part. If there are different factions vying for power in Konoha and Naruto becomes an obstacle or a scapegoat for one of them, they could manipulate the situation to get him exiled.
One possible reason could be that he is wrongly accused of a serious crime against the village. For example, if some important secrets are leaked and the village leaders suspect Naruto without proper investigation, they might exile him to safeguard the village's so - called security.
One possible reason could be political intrigue. Maybe there are some within Konoha who fear the power she might possess as a female Jinchuriki. They could spread false rumors about her being a threat to the village's stability, leading to her exile.
One possible reason could be fear. Naruto has the Nine - Tails within him, and some in Konoha might be too afraid of its power getting out of control. They may not fully trust Naruto to keep it in check.
Naruto might forgive Konoha because he realizes that holding a grudge won't solve anything. He has seen the destruction that hatred can cause, like during the Pain arc. So, he chooses to forgive in order to move forward and bring about positive change. Another reason could be his respect for the previous Hokages and their ideals for Konoha.
In this fanfiction, Naruto might find allies among the shinobi who were also wrongly exiled from their own villages. They would share a common bond of being outcasts and would fight together against the system that exiled them. Additionally, there could be some rogue ninja with a sense of justice who believe in Naruto's cause and decide to stand by his side in the war.
It could also be a part of a larger plan. Perhaps the Akatsuki sent him on a mission that was actually a trap set by Konoha. Konoha could have leaked false information to lure Deidara in and then capture him. Another possibility is that he got separated from his Akatsuki partners during a fight in Konoha and was then overpowered and captured.
Another reason could be that he witnesses corruption or unfairness within the village leadership. If he sees that the system is rigged against certain groups, including himself or his friends, he could grow to hate Konoha and decide to leave.
One possible reason could be that Naruto discovers some dark secrets about the village leadership that go against his values. For example, if he finds out that they have been using underhanded means to maintain power.
Another reason might be that Naruto is seeking a greater purpose. In the fanfiction, his 'godlike' state could make him realize that there are threats out there that he can't face while being tied to Konoha. He may leave to protect the world on a larger scale, believing that he can be more effective away from the village.
In the 'Naruto Exiled Konoha Goes to War' fanfiction, Naruto's character would likely undergo significant development. His exile would have made him question his previous beliefs and values. In the war, he may initially be seen as an enemy by Konoha, but as the story progresses, they might realize their mistake. He could also meet some old friends on the battlefield, leading to some very emotional and tense moments. His experience outside Konoha would have toughened him up, and he would be a force to be reckoned with in the war.