Perhaps Naruto gets influenced by a powerful and malevolent force. This force could convince him that the shinobi world is corrupt and that the only way to change it is by going against the system. In this 'naruto goes rogue instead of sasuke fanfiction', he might start attacking other villages first, thinking that by showing them the true power, he can force a change in the way the shinobi world operates.
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.
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.
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.
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.
Well, in fanfiction, the author might want to explore a different romantic dynamic. Naruto and Sasuke have a very intense friendship, but by having Naruto kiss Hinata instead, it could be to show a more traditional romantic storyline. Maybe the author thinks that Hinata's gentle and loving nature is a better match for Naruto in a romantic sense compared to his complex relationship with Sasuke.
In the 'naruto goes on a rampage fanfiction', it could be that Naruto is under some sort of dark magic or mind - control. This makes him lose his usual self - control and go on a rampage. He could start attacking both enemies and allies without realizing it until someone finds a way to break the spell on him.
One possible plot could be that Naruto is constantly ostracized by the villagers even after all he has done for them. The years of being treated as an outcast and having his good intentions misconstrued finally push him over the edge. He starts to see the villagers as the real enemy and decides to use his power not for their protection but to make them feel the pain he has endured.
Maybe in the fanfiction, Naruto's positive and energetic personality attracts Ino more. He is always so full of life and has a big heart.
Well, one possibility is that Naruto feels betrayed by the Hidden Leaf Village. Maybe they wrongly accused him of a serious crime. So, he decides to go rogue. He could then start traveling alone, using his skills to survive and avoid capture. He might also meet other outcasts who understand his situation.