One reason could be that some in the village feared his potential as the Jinchuriki of the Nine - Tails. They might have thought locking him away would prevent him from causing chaos. Another reason could be related to those who still held grudges against the Fourth Hokage for sealing the Nine - Tails in Naruto. They took it out on Naruto by imprisoning him.
Maybe in the fanfiction, there were dark forces within the village that saw Naruto as a threat to their power. By locking him away as a child, they could control the narrative and keep their secrets safe. Also, it could be due to some sort of prophecy that was misinterpreted. People thought Naruto would bring destruction, so they locked him up to try and avoid it.
In some fanfiction, it could be because of the villagers' superstitious beliefs. Since Naruto had the Nine - Tails within him, they considered him an 'evil omen'. They were so afraid that they locked him away. Additionally, there might be a group of elders who thought Naruto's presence would disrupt the traditional order of the village and decided to isolate him.
The best chapter pointer here is Chapter 266, "He Really Deserves to Die!". It opens with Upon hearing this, the deputy director's expression also turned serious. and closes on Now I see why Jiang Li despises her brother so much, utterly unreliable!"....
The best chapter pointer here is Chapter 263, "Jiang Li Won the Medal for Outstanding Individual?!". It opens with Southwest Wildlife Protection Association V: On the evening of July 10 of... and closes on But when she saw Wen Jiaojiao and Qi Tianyu and others standing up to....
If you want the clearest chapter reference, go to Chapter 239. Early on, I can't believe it, I thought the live broadcast was over, but here's a...; later, the chapter leans on Now, they have to vote for who transformed the most successfully..
Chapter 264 is the strongest chapter-level answer because it starts from Jiang Li first reassured her mother, then opened the chat box with Shen... and follows through on [Do your faces hurt, you rumormongers?.
Look to Chapter 278 for the clearest answer. It begins with People from the fan club also got word that Jiang Li was soon to return to..., keeps building through Early in the morning, as the president of the fan club, Lu Xingchao..., and lands on How about we throw a party instead?" He Yun was.
Look to Chapter 276 for the clearest answer. It begins with After listening to Jiang Li's words, Shen Lan's brow furrowed again., keeps building through Jiang Li, I think I might know who this person is., and lands on Don't overthink it and get some rest." Jiang Li nodded..
Chapter 227 is the strongest chapter-level answer because it starts from Your Four Pillars of Destiny is very strong, with wealth, authority, and... and follows through on Your three palaces are prosperous, and correspondingly, your marriage....
A practical answer is Chapter 269, because it turns the idea into a concrete scene. The chapter opens with The next morning, Shen Lan's personal account posted a Weibo., adds pressure through Too excited to remember to switch to his alternate account, he..., and ends on At that time, people.
If you want the clearest chapter reference, go to Chapter 227. Early on, Your Four Pillars of Destiny is very strong, with wealth, authority, and...; later, the chapter leans on The comments section was filled with amazement as well..
A practical answer is Chapter 271, because it turns the idea into a concrete scene. The chapter opens with He had barely finished speaking when he received a withering look from..., adds pressure through Forget about your brother;