Well, one possibility is that Naruto could be betrayed by the Hidden Leaf Village. Maybe false accusations are made against him, and in his anger and disappointment, he decides to go rogue. He might then start to form his own group of outcasts who also feel wronged by the ninja system.
Well, it could be about Naruto being influenced by some dark force. Maybe he gets tired of the village's treatment and decides to go against it. He might use his powerful jutsu in a more menacing way than before.
In a 'naruto goes rogue' fanfic, the plot could involve Naruto feeling betrayed by the Hidden Leaf Village. Maybe he discovers some dark secrets about the village leaders. For example, he might find out they were using him all along. So, he decides to break away and form his own group of outcasts who also felt wronged by the village.
One possible plot could be Naruto feeling betrayed by the village. Maybe he discovers some dark secrets about the Hidden Leaf that make him question his loyalty. For example, if he finds out that the village leaders were involved in unethical experiments. So, instead of following the village's rules blindly, he goes rogue to seek his own version of justice.
In the 'Boruto goes rogue fanfiction', it could be that he discovers a dark secret about the village leadership. This makes him lose faith in the system and go rogue. He might then seek out other outcasts or those with similar grievances to form his own group to oppose the village's unjust ways.
The Hidden Leaf Village itself could be the main antagonist. If they turn on Naruto for no good reason, they become the force he has to fight against as a rogue ninja.
The plot could revolve around a magical or cursed situation. For instance, a spell has been cast that forces Naruto and Rogue to kiss as a way to break a greater curse. After the kiss, they start to share emotions and memories, which then drives them to figure out who cast the spell and why. Along the way, they learn about each other's cultures and powers, and a relationship gradually forms between them.
Kakashi might also side with Naruto in this scenario. He has trained Naruto and has a deep bond with him. If Kakashi discovers that Naruto has been wronged, he could choose to follow Naruto rather than the village's orders. Additionally, Hinata might be an ally. Her love for Naruto could make her stand by his side, believing in his good nature no matter what the village says.
Another possibility is Madara Uchiha. Even if he is not fully alive in the original story, in this fanfiction, his spirit or some form of his influence could be present. He could manipulate Naruto's new evil state for his own ends, like trying to destroy the ninja world that he once had a vendetta against.
Well, perhaps Naruto could use his ninja skills to navigate the complex politics of Westeros. He might team up with some of the local characters, like Arya Stark, and they could go on adventures together, fighting off White Walkers using Naruto's jutsu.
The plot might involve Naruto making friends with some of the Hogwarts students. He could show them his unique fighting style, like the Rasengan, and they in turn could teach him some basic spells. For example, Hermione could be intrigued by Naruto's chakra system and Naruto could be amazed by her knowledge of magic. There could also be a conflict where Naruto has to face some dark wizards using his ninja abilities, while also learning how to use magic in a pinch.