The plot might be that Naruto has always been an outcast in Konoha in this fanfiction, despite his efforts to protect it. The villagers' constant mistrust and the lack of support from the higher - ups finally lead to his banishment. After leaving, he realizes the full extent of the corruption and unfairness in Konoha. He decides to use his unique abilities, which he has developed over time, to take down the village. However, he may not be entirely evil - hearted. There could be a chance for him to change his mind if the villagers or his friends come to their senses and try to make amends for their past behavior.
Well, it could start with Naruto being framed for a crime he didn't commit, like being associated with a powerful enemy of Konoha. The elders or some powerful figures in the village might banish him to protect their own interests. Then, Naruto, feeling deeply hurt, starts to gather his own strength. He might meet some outcasts or enemies of Konoha during his travels who help him in his plan to take revenge on Konoha by destroying it. He may also have some internal conflict as he still has some friends in the village, but his anger at the unjust treatment overshadows that.
In this kind of fanfiction, Naruto might be banished due to some false accusations or political conspiracies in Konoha. Once banished, he could decide to destroy Konoha out of anger and a sense of betrayal. He may have learned powerful jutsus during his exile and use them against the village that once rejected him.
It could be Sasuke. If he were to turn to the dark side in the fanfiction, his Rinnegan powers could be used to destroy Konoha. He has the potential to be extremely powerful and if he has some sort of vendetta or is influenced by some dark force, he might take his anger out on the village.
Sasuke would likely be involved. He has his own issues with Konoha and might side with Naruto, either out of friendship or his own vendetta against the village. Also, the elders of Konoha like Danzo could be important characters as they might be the ones behind Naruto's banishment.
Madara Uchiha could also be a possible antagonist in this scenario. Even if he is dead in the original story, in a fanfiction, his lingering influence or a resurrected form could manipulate Naruto. Madara was always against Konoha's ideals to some extent and might use Naruto as a tool to destroy what he hated.
One possible motive could be a misunderstanding. Maybe Naruto discovers some false information that makes him believe Konoha has betrayed him. For example, if he's wrongly led to think that the village elders are planning to harm his friends or his sensei. Another motive could be the influence of a powerful and evil entity that has somehow managed to control Naruto's mind. It could use Naruto's strength to achieve its own goal of destroying Konoha.
In a 'naruto destroys konoha fanfic', one possible plot could be that Naruto is pushed to the edge by the villagers' constant mistreatment and the hidden secrets of Konoha's leadership. He discovers some dark deeds that the village elders have been involved in, like using him as a pawn without his knowledge. This betrayal could fuel his anger and lead him to decide to take revenge on Konoha.
One possible plot could be that Naruto and Sasuke are wrongly accused of a serious crime against Konoha. For example, they might be framed for conspiring with an enemy village. As a result, they are banished. Naruto, with his unwavering spirit, might start thinking about how to prove their innocence from outside the village. Sasuke, on the other hand, could initially be more bitter and focused on getting revenge on those who framed them. Together, they embark on a journey to find the real culprits while also facing various challenges outside Konoha, such as dealing with other ninja clans who see them as outcasts and potential threats.
One possible reason could be false accusations of a serious crime. For example, if he was wrongly blamed for a major attack on the village. Another reason might be political intrigue. Some powerful figures in the village might see Naruto as a threat to their power and find a way to banish him to maintain their control.
One possible reason could be fear. Naruto's 'godlike' powers might be too much for the village to handle. They could be afraid that he might accidentally cause destruction. Another reason might be envy among some of the villagers or ninja. They may not like that Naruto has become so powerful all of a sudden and want him out of the way.
One possible plotline could be that Naruto is somehow corrupted or misled. Maybe he discovers some dark secrets within Konoha that he believes can only be resolved by its destruction. As for the Alvarez Empire, they might see an opportunity to expand their influence in the chaos Naruto creates and form an uneasy alliance with him at first.
It could be an evil version of Sasuke. Maybe he has fallen completely to the dark side and manipulates Naruto into destroying Konoha. Or it could be Orochimaru who has found a new way to control Naruto's actions from the shadows.