One possible scenario could be Naruto feeling betrayed by the village. Maybe he discovers some dark secrets about the village leadership and decides he can no longer stay. Another could be that he is framed for a crime he didn't commit and is forced to leave to protect himself. Or perhaps he has a vision of a different path for his life that doesn't involve the village.
The village elders could be the main antagonists. They might have their own agendas that conflict with Naruto's ideals, which could lead to him leaving. For instance, they may be more concerned with maintaining the village's power structure than the well - being of its individuals.
Shion's life would be completely changed. Naruto abandoning the village means that their future is uncertain. She may have to adapt to a new lifestyle. For example, if they are constantly on the move, she has to get used to not having a permanent home. Also, she may have to deal with Naruto's possible regrets or homesickness. Their relationship would be put to the test as they deal with the aftermath of Naruto's decision to abandon the village.
One reason could be a sense of betrayal. Maybe he discovers some dark secrets about the village leadership that make him lose faith in Konohagakure. For example, if he finds out they were using him all along just as a weapon against other villages.
In some fanfictions, external forces might be the cause. Perhaps a powerful enemy threatens Hinata and tells her that staying with Naruto will put him in danger. So, to protect Naruto, she decides to abandon him. This adds a tragic and self - sacrificing element to the story.
One possible reason could be that the writer lost inspiration. Jiraiya has a complex character in the Naruto series, and it might be difficult to keep coming up with new and interesting plotlines for him in fanfiction. Another reason could be that the writer got involved in other projects or fandoms and simply didn't have the time to continue with the Naruto fanfiction centered around Jiraiya.
One possible reason could be fear. Naruto has the Nine - Tails within him, and some in Konoha might be too afraid of its power getting out of control. They may not fully trust Naruto to keep it in check.
In some cases, Naruto might initially become bitter towards his parents. But as he experiences more in life and learns about the possible reasons behind their actions, he could come to understand and even forgive them. His reaction would also depend on the people around him. If he has good friends or mentors, they could help him deal with his emotions in a more positive way.
In some fanfictions, his parents might be forced to abandon him due to a powerful enemy threatening their family. They may believe that by leaving Naruto alone, the enemy will not target him immediately, thinking he's just an ordinary orphan.
Well, Naruto might use his charisma to convince nearby villages or merchants to donate resources. He could also lead missions to explore uncharted areas for valuable materials like rare ores or unique plants that can be used for building or trading.