It might be an exploration of the 'nature vs. nurture' concept. Writers could be interested in seeing how Naruto's character would develop if he had a negative influence like an abusive Minato instead of the loving father he was supposed to have. Also, some might do it just to be different from the mainstream fanfictions and explore a more edgy side of the Naruto universe.
One possible motive could be that Minato is under some sort of dark magic or mind control. In fanfiction, authors often play with the idea of characters being forced to act against their true nature. So, if Minato is being controlled, he might end up doing something as extreme as killing Naruto.
Well, perhaps the writer wants to break the mold of the traditional Naruto story. In the original, Minato is a great father figure, but in this fanfiction concept, the writer might be aiming to show how an alternate reality could shape Naruto. Maybe they want to explore themes of trauma and how Naruto could overcome it. Or it could be a way to experiment with different character dynamics, seeing how Naruto would interact with a Minato who is not the loving father we expect. It could also be a form of creative exploration of the characters' personalities, pushing the boundaries of what we think we know about them.
A possible motive could be that Naruto discovers some dark secret about Minato that makes him feel betrayed. For example, if he finds out that Minato was involved in some unethical experiments that led to the suffering of many people. Or perhaps Naruto is tricked by a powerful villain who manipulates his emotions and convinces him that Minato is the root of all his problems.
There could be. Fanfiction often explores various 'what - if' scenarios, even the disturbing ones like Naruto being abused by Minato. But these are not in line with the positive image of Minato in the main story. Writers may create such stories to explore extreme character development or just for shock value.
Yes, there might be. The Naruto fandom is quite large and diverse, so there could be fanfictions exploring such dark and alternate scenarios. However, these often deviate from the original positive relationship portrayed in the official series.
Perhaps Minato has been corrupted by power. In the fanfiction world, he might have come across some source of power that has twisted his mind. By sealing Naruto's chakra, he could be trying to take that power for himself. It could also be related to some prophecy that he misinterprets. He thinks sealing Naruto's chakra is the key to saving the world, but in reality, it's the opposite.
Some writers might do it to create a sense of shock. They want to break the traditional view of the Dumbledore - Harry relationship and get readers' attention. It's a way to be different in the vast sea of fanfiction.
Well, Obito could be doing it out of revenge. He has a long - standing grudge against the Hidden Leaf Village. Naruto is seen as a symbol of hope in the village. So, by kidnapping him, Obito could be trying to strike a major blow to the village's morale and show that their so - called 'hope' can be easily taken away.
One possible motive could be power. Danzo was always obsessed with having power in Konoha. By experimenting on Naruto, who is the Jinchuriki of the Nine - Tails, he might have hoped to harness the power of the Tailed Beast in some way. Maybe he thought he could create a super - soldier or gain some unique abilities from Naruto's connection to the Nine - Tails.
One possible reason could be for Naruto's protection. Maybe Minato knew of some great danger that was coming for Naruto and he thought that banishing him would keep him out of harm's way. Another reason might be related to some prophecy or hidden power within Naruto that Minato feared could be misused if Naruto stayed in the village.