It could also be related to the way Konoha has dealt with other issues like the Uchiha clan massacre. If Naruto discovers some aspects of Konoha's involvement in it that he finds morally unacceptable, such as covering up the truth or being complicit in some way. This could make him lose faith in Konoha and be unable to forgive it.
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.
One possible reason could be the extreme betrayal he has faced. Maybe some characters he trusted deeply turned out to be working against him in ways that were unforgivable, like revealing secrets that put his life and the lives of his friends in danger.
One possible reason could be that Naruto has been mistreated by the villagers in Konoha for a long time. Despite his efforts to gain acceptance, if he's constantly faced with rejection or unfair treatment, it might lead to him not caring. For example, when he was a child, many villagers shunned him because he was the host of the Nine - Tails. This continuous negative experience could build up over time and cause him to lose his sense of loyalty to Konoha.
In the original story, Naruto is very much a symbol of loyalty and love for Konoha. But in this fanfiction, his unforgiving nature towards Konoha makes him seem more complex. He's no longer just the village - loving hero, but a character with deep - seated grudges.
One possible reason could be feeling betrayed by the village leaders. Maybe they made decisions that Naruto strongly disagreed with, like how they treated certain groups or individuals. If Naruto felt that Konoha was no longer the place that stood for justice and fairness as he once believed, he might abandon it.
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.
Well, Naruto's forgiveness can lead to a more united Konoha. It might stop the cycle of revenge and hatred. People who were once at odds with Naruto may start to see him in a new light and be more willing to work together. This could result in stronger defenses against external threats and a more harmonious internal environment in the village.
One reason could be that he feels betrayed. Maybe there were some political decisions in Konoha that made him feel like he was being used rather than truly valued as a ninja. For example, if he found out that some of the higher - ups were only interested in his power as the Jinchuriki of the Nine - Tails and not in him as a person.
One possible reason could be that the villagers never fully accepted him despite his efforts to protect Konoha. They might have continued to treat him as an outcast, which could have led to his growing resentment and ultimately his banishment if the situation got out of hand. For example, if he was wrongly accused of a serious crime and instead of getting a fair trial, the village elders decided to banish him.
One possible reason could be a mission. Maybe the Hidden Cloud Village (Kumo) requests Naruto's help specifically for a very important and dangerous mission that can only be accomplished by him. So, he has to leave Konoha for Kumo.