In the beginning of the plot, Naruto would become very jumpy and over - cautious around everyone. He would start seeing threats in normal situations. For instance, when someone offers to train with him, he would think they are trying to harm him. As the story unfolds, the author could introduce a new character who has a special ability to understand and help Naruto. This character could guide Naruto through his fears. Meanwhile, Naruto's old enemies might sense his weakness and try to take advantage of it. So there would be a dual - plot of Naruto dealing with his internal fear and external threats, which would make for an interesting and complex story development.
The plot could start with Naruto isolating himself. He would avoid his friends and stay away from the village. His friends would notice this change and try to reach out to him. But Naruto, being scared, would react badly. This would create a lot of confusion and worry among his friends. Then, as the story progresses, they would try to find out the reason behind his fear.
One way the plot could develop is that Naruto begins to trust the wrong people because he doesn't remember who he should trust. This could lead to him getting into dangerous situations. Meanwhile, his true friends are desperately searching for a way to reverse his memory loss. As the story progresses, Naruto might start to have flashes of his old memories, which would add some mystery and hope to the plot.
One way this could develop is if Naruto's identity as the Jinchuriki of the Nine - Tails is fully exploited against him. People might fear his power and turn on him. For example, the village elders could spread false rumors about him losing control of the Nine - Tails, causing the villagers to shun him. Another possibility is that a powerful enemy uses mind - control or deception to make those close to Naruto, like Sakura or Kakashi, turn against him. This would be a huge blow to Naruto as he values his relationships deeply.
The plot could develop in various ways. It might start with initial shock among the characters. Then, Naruto's friends could become more protective. The plot could then shift to the characters using Naruto's memories to strategize against common enemies. For example, they could learn from his battles against Pain and use that knowledge in future conflicts.
In this fanfiction, Naruto's fear of Kushina at night can show his vulnerability. Despite being a strong ninja, he has this fear which makes him more human. It can also be a way to explore his relationship with his mother. His fear might lead to him trying to understand more about Kushina and their family history.
They could start by having an honest conversation. Naruto could sit down with Boruto and just listen to his fears without judgment. This would be a first step in building a better relationship.
Maybe it's because Nico has some complex and often dark or angsty aspects to his character in the source material. Fanfiction might explore these in extreme ways that can be disturbing to some readers.
In the 'naruto avoids everyone fanfiction', the development could also involve Naruto encountering new characters during his isolation. These could be hermits or mysterious creatures that live in the secluded areas he has chosen to stay in. Through his interactions with them, he might gain new powers or insights. However, his friends would not give up on finding him and would eventually track him down. This would lead to a confrontation where Naruto has to decide whether to continue avoiding them or to return to his old life.
Naruto's character would likely become more withdrawn. He's used to having people around him, but now, with everyone against him, he'd be more guarded. For example, he might not be as quick to trust new people.
Naruto would likely become more withdrawn at first. He's used to being an outcast to some extent, but total rejection would hit him hard. He might start to question his own worth and his dreams of becoming Hokage. However, as time goes on, he could develop a stronger sense of self - reliance. He'd have to rely on his own skills and instincts more, which would make him a more formidable ninja in the long run.
I think it's because Nico is a character with a lot of depth. Fanfiction might delve too deep into his psyche and expose some very raw and disturbing aspects that people aren't prepared for. It could also be that the way some fanfiction writers portray his relationships, especially the more controversial ones, makes people scared to engage with it.