A significant difference would be the power dynamics. In the original, Naruto gains power through his own hard work, training, and the power of the Nine - Tails. In a fanfiction where he marries Kushina, there could be new power - sharing elements. Maybe they combine their Uzumaki chakra in unique ways. Also, the social aspect is different. In the original, Naruto is seen as an orphan trying to find his place. Here, he is part of a powerful couple. This changes how the other characters interact with him and how the story progresses in terms of village politics and alliances.
The original Naruto story builds on the idea of family bonds being strong and unbreakable. But in the 'naruto hates kushina' fanfiction, this fundamental aspect is turned upside down. This changes the whole dynamic of Naruto's character development. He is no longer the Naruto we know who is inspired by his parents' legacy, but rather a Naruto with a completely different set of emotions towards his mother.
In the original, Naruto is the protagonist who is on a journey to become Hokage and gain the respect of the village. If Kushina kills Naruto in the fanfic, then all the dreams and hopes associated with Naruto are shattered. The whole narrative arc of the series is disrupted, and it could lead to a much darker and more despair - filled story for the other characters in the Naruto universe.
Well, if Naruto got Kushina pregnant in a fanfiction, it would completely mess up the original timeline. Naruto was born to Kushina and Minato in the original story. If this were to happen out of the normal sequence, it could lead to all sorts of changes. For example, Naruto might not grow up as an orphan. He might have a very different upbringing with Kushina around. Also, the relationships he forms in the village could be different. His training with Jiraiya might not happen in the same way or at all, which would then impact how he develops as a ninja and his ability to face the various threats to the village.
The original Naruto storyline focuses on family bonds and love within the Uzumaki family. However, in this fanfiction, the 'naruto hates kushina' aspect goes against that. It might introduce new conflicts that were not present in the original. For instance, instead of Naruto having the support of his mother's legacy, he now has to struggle against his hatred for her, which could lead to different power - up scenarios or character developments.
The original Naruto story is built on themes of love, sacrifice, and the pursuit of dreams. When you have a fanfiction where Minato and Kushina hate Naruto, it undermines these themes. For example, Minato's sacrifice in the original was for Naruto's future. But in this fanfiction, that meaning is lost as they are now against Naruto. It's a huge deviation from the positive and motivational elements of the original story.
Well, in the original storyline, Kushina loves Naruto deeply and would never try to kill him. In this fanfiction, it's a complete 180 - degree turn. Her character is made to be much darker, which is a huge deviation as she's portrayed as a loving and selfless mother in the original.
For Naruto to marry Grayfia, the story could start with a prophecy. A prophecy that foretells of a union between two powerful beings from different realms. Naruto, always one to face challenges head - on, and Grayfia, who is used to dealing with complex situations in her own world, would be brought together by this prophecy. They would initially be skeptical but as they get to know each other better, they find that they are a perfect match and decide to marry.
In such a fanfiction scenario, the village of Konoha would be affected too. Minato is a respected figure. His abandonment could cause a scandal. Naruto might not have the same level of protection from the village elders. This could lead to different power dynamics within the village. Maybe other ninja clans would try to take advantage of Naruto's situation. Also, Kushina's family might react in various ways, some might try to find Minato and some might focus on taking care of Kushina and Naruto.
Well, in the original storyline, there might not be a character named Kakuza at all. So right off the bat, this is a new addition. If Naruto kills Kakuza in the fanfiction, it would show a darker side of Naruto perhaps. In the original, Naruto is always about redemption and saving his enemies. But here, if he kills, it's a deviation from his usual character trait.
One possible storyline could be that Naruto realizes his feelings for Ino later in life. Maybe after all the chaos and battles, he sees Ino in a new light. They start off as friends who have always been there for each other during the tough times in Konoha. Ino, with her strong - willed and confident personality, helps Naruto deal with the pressures of being a hero. As they spend more time together, their relationship deepens and they eventually fall in love and get married. It could also involve their friends' reactions, like Sakura being a bit surprised at first but then being happy for them.