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.
In such a fanfiction, Naruto might find himself in a very lonely and confusing situation. He would have to relearn about his relationships and the world around him. Maybe he'd be more cautious as he doesn't remember who is friend or foe.
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 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.
Often, it starts with the shock of Minato's forgetfulness. Then Naruto might try to jog his memory in simple ways at first, like showing familiar places. If that doesn't work, he could seek help from others in the village.
One possible plot could be that Naruto suffers a head injury during a battle. As a result, he forgets about Sasuke completely. His friends initially don't notice, but as time passes, they realize Naruto's behavior towards Sasuke - related things is strange. For example, he doesn't get angry when Sasuke is mentioned like he used to. Then they try to help Naruto regain his memories of Sasuke through various means, like showing him old photos or taking him to places they used to go together.
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.
One possible plot twist could be that Naruto's memory loss leads to him accidentally endangering his former teammates. For example, he might unknowingly reveal secrets to the wrong people. Another could be that his forgotten bond with Team 7 causes him to form new alliances that are initially at odds with his old team. Maybe he teams up with former enemies who manipulate his lack of memory. Also, it could lead to a situation where Team 7 has to reteach Naruto about their shared past and values, which would be a really emotional and character - developing journey for all of them.
One good 'everyone forgets naruto fanfic' could be those that focus on minor characters' backstories. For example, a fanfic about the life of a Chunin who was overlooked in the original series. It gives depth to the Naruto universe in a different way.
Reddit can also be a good place. There are Naruto - related subreddits where fans sometimes share or discuss interesting fanfics. You could post a request for 'everyone forgets naruto fanfic' and see if anyone can point you in the right direction.
Well, Naruto could initially be shocked that no one remembers. But then he might try to play it cool, because that's his nature. He could also think that they might be planning a surprise later. However, as time passes and still no one remembers, he would start to feel really down. He might even go off on his own to brood about it, wondering if he's not as important to his friends as he thought.