Perhaps it's because Naruto represents the future of the village in a more direct way. Minato sacrificed himself for the village, and Naruto is like the continuation of his legacy. Kushina, while important, may not be as central to Minato's view of the village's future as Naruto is. So in fanfics, this could be a reason for Minato to like Naruto more.
In fanfics, Minato may like Naruto more than Kushina because Naruto has faced so many challenges alone. Minato, having lost his life early, wasn't there to protect Naruto as he grew up. This might make Minato feel a sense of guilt and at the same time a great admiration for how Naruto has overcome all the difficulties. Kushina, on the other hand, didn't have the same kind of story in relation to Minato in the fanfic's narrative, which could lead to Minato having a stronger preference for Naruto.
Well, in some fanfics, Minato might see more of himself in Naruto. Naruto has his determination and the will to protect the village just like Minato did. Also, Naruto being his son, he could have a special connection that he doesn't have with Kushina in the same way. Maybe Naruto's journey to become a great ninja reminds Minato of his own past, so he has a stronger liking for Naruto.
Another popular fanfic is 'Minato and Kushina's Legacy in Naruto'. This one explores how Minato and Kushina's influence on Naruto is not just about power but also about values. It has a long - running plot that unfolds as Naruto grows, and it has a great following among Naruto fans.
The theme of legacy is also quite common. Since Minato is the Fourth Hokage, fanfics might explore how he wants Naruto to carry on his legacy. And Kushina's strong will also gets passed on to Naruto in these stories. They also often show the simple joys of family life, like spending time together at home, which is a contrast to the dangerous ninja world outside.
One reason could be Naruto's journey. Naruto has to face so many challenges and grow from a lonely outcast to a hero. Minato might be more drawn to this growth and transformation, which is a big part of Naruto's story in fanfics.
Yes, in some fanfics, Minato shows a deeper affection for Naruto. Minato may see Naruto as the future hope and the carrier of his unfulfilled dreams. Also, Naruto's journey and growth might resonate more with Minato on an emotional level compared to his feelings for Kushina.
On a more personal level, they could face internal guilt. As Naruto grows up and achieves great things on his own despite their neglect, Minato and Kushina may realize what they've missed out on. This realization could cause them a great deal of internal turmoil and regret for not being there for their son when he needed them.
One good Minato Kushina fanfic could be 'The Love of Minato and Kushina'. It might focus on their relationship from the start, how they met, and the development of their love. It could show Minato's admiration for Kushina's strong will and Kushina's growing affection for Minato's kind heart.
In many Naruto fanfictions where Naruto meets Kushina and Minato, it often creates a very emotional scenario. Naruto finally gets to meet his parents who he has only heard about. It could be a heart - warming reunion where they share stories, hugs, and Minato and Kushina get to see how far Naruto has come.
There's a fanfic called 'Minato's Return'. In this story, Minato somehow returns and gets to see Naruto's growth. It's really interesting to see how he interacts with Kushina, who is also there in the story, and how they both guide Naruto in new ways. The descriptions of their family bond are heartwarming.
At first, Naruto and Kushina might start to distance themselves from Minato. They could avoid him and not talk to him as much. As time goes on, the hatred might grow deeper. Naruto could start to oppose Minato in public or in important village matters. Kushina might also try to influence others in the village against Minato.
Minato would probably be very proud. He might notice Naruto's use of his own jutsu and be impressed by how Naruto has developed his skills. Kushina would be more emotional, maybe crying at the sight of Naruto growing up so well.