Well, perhaps he loses his identity due to some sort of dark magic or a powerful enemy's jutsu. As a result, he could end up on a journey to rediscover himself. He might have to face many challenges without the confidence that his identity once gave him, like having to fight enemies without his well - known combat style.
In this fanfiction, Naruto could lose his way by being separated from his friends for a long time. Without their support and guidance, he may make wrong decisions. For example, he could be tricked into working for an enemy who disguises as a friend in need. This would lead him down a path where he gradually loses sight of his original goals and the positive ninja way he once followed.
Well, he could start making really rash decisions. Maybe he'd attack his friends by mistake, thinking they were enemies. Since he's lost his mind, his usual judgment would be out the window.
In such a scenario, his relationships would be severely affected. His friends would be horrified by the change in him. Naruto's bond with Sasuke, for example, would be in jeopardy. Since he has lost his humanity, he may not understand the concept of friendship anymore and might even see Sasuke as a rival to be eliminated. And his relationship with the female Kyuubi would be complex. Maybe she would try to control him or use his new state for her own purposes.
In the 'naruto finally loses it fanfiction', perhaps Naruto loses it due to continuous emotional trauma. He has been through so much, like losing his friends in battles or constantly being in life - threatening situations. All these accumulated stressors could cause him to snap. He could abandon his usual optimistic and friendly nature, becoming a more solitary and aggressive figure, which would be a huge shift from his normal self.
Well, maybe he stumbles around blindly for a while, bumping into things and getting into all sorts of comical situations. He could also rely on his friends more to help him get around until he finds his glasses.
Well, in the 'Harry Potter loses his magic fanfiction', he could end up finding new strengths within himself. Maybe he discovers that his courage and intelligence are enough to get him through tough situations even without magic. He could also start to see the wizarding world from a different perspective, one of the non - magical people, and perhaps work towards making the two worlds more inclusive.
The story could develop with Naruto being confused and making mistakes that he wouldn't normally make. His friends would try to help him, but he might push them away because he doesn't understand who they are to him anymore.
A 'Naruto loses his memory fanfiction' might involve a mysterious curse placed on Naruto. He forgets not only his personal relationships but also his ninja skills. His sensei, Kakashi, could take it upon himself to reteach Naruto everything from the basics. Meanwhile, Naruto might form new, unexpected relationships with people in the village who don't know the 'old' him, and these new relationships could either help or hinder his journey to regain his memory.
Maybe Orochimaru manages to get his hands on Naruto and subjects him to some dark and twisted experiments. These experiments could mess with Naruto's mind, causing him to lose his sanity. He could start seeing illusions all the time, believing his friends are his enemies. As a result, he'd be in a constant state of confusion and aggression, and his once - positive attitude towards life and ninja - hood would be completely gone.
Maybe he loses his humanity as a result of a failed experiment. Some rogue ninja or a secret organization might try to enhance his power but end up corrupting his very essence. As a consequence, Naruto could start to show no mercy, lack empathy, and use his powers for destruction rather than protection.