In a 'naruto becomes a missing nin fanfiction', perhaps Naruto discovers some dark secrets about the village leadership. These secrets are so dangerous that the village wants to silence him. He then decides to go rogue to expose these secrets to the world. As a missing nin, he might form alliances with other outcasts who also have a grudge against the current system.
In such a fanfic, it could be that Naruto discovers some dark secrets about the village leadership. These secrets are so dangerous that the leaders try to silence him. Naruto refuses to be silenced and decides to break away from the village, becoming a missing nin. He then travels the ninja world, gathering allies who also believe in exposing these secrets and fighting against the unjust system of the village.
Sasuke could potentially be an ally. Given their complex relationship, Sasuke might understand Naruto's situation and choose to side with him. They have a deep bond, and Sasuke has also been an outcast in a way. Another could be Jiraiya. If he were still alive, he might believe in Naruto's innocence and help him from the shadows.
Perhaps the missing nin discovers new abilities within the Rinnegan that no one else has. They might be able to combine different paths in unexpected ways. For instance, using the Animal Path to summon creatures and then enhancing those creatures with the power of the Asura Path. This would make their summoned beasts more powerful and difficult to defeat in combat.
If Naruto and Temari were missing nin in a fanfiction, it could start with a misunderstanding. Naruto might be framed for a crime he didn't commit and Temari, believing in his innocence, decides to help him escape. They then have to live on the run. Along the way, they meet other outcasts and form a sort of rebel group. Naruto's ability to make friends easily and Temari's strong leadership skills could be the driving force behind this new group's growth.
Maybe Naruto goes missing - nin by choice to protect the village from a secret and powerful threat that he can't fight as an official shinobi. He could be secretly training in isolation and gathering allies from the fringes of the ninja world.
Well, one possibility is that Naruto leaves the village due to being wrongly accused. He then has to survive on his own while being hunted as an S - rank missing nin. He might form unexpected alliances with other outcasts and use his unique skills in new ways.
A great plot idea would be that the missing nin with the Rinnegan is actually a good - hearted person who was framed. They use their Rinnegan powers not for evil but to prove their innocence. Along the way, they encounter other ninjas who gradually come to understand their situation and start to help them. This could include forming alliances and fighting against the real villains who set them up.
In a 'naruto is a missing nin fanfiction', Naruto could be forced to become a missing nin due to a threat against his friends. He leaves to draw the danger away from them. While on his own, he trains intensively and becomes a more powerful and stealthy ninja. He also has to deal with the emotional turmoil of being separated from his loved ones and the village he once called home.
Kimimaro could be an interesting missing nin character to explore in fanfiction. He was a tool for Orochimaru, but had his own internal struggles. You could write about his life before fully becoming a missing nin, his loyalty to Orochimaru despite his own deteriorating health, and what might have happened if he had broken free from Orochimaru's control. Another character could be Nagato. Before he became Pain, he had experiences that could be considered as leading towards a missing - nin - like existence. His views on peace and his use of the Akatsuki could be delved into in the context of a missing nin story.
A possible plot twist could be that the missing - nin is being controlled by a greater evil. Naruto, being raised by this missing - nin, unknowingly gets caught up in a much larger conspiracy. As he grows up, he starts to notice strange things about his guardian and eventually discovers the truth, leading him to have to make some tough decisions about loyalty and what is right.