I think it's a really bad idea. Naruto is a hero in the series, and the fourth Hokage is also a great character. Linking them in such a negative and inappropriate way is disrespectful to the story and the fans who love it.
Sakura might be surprised at first, but then she could start to see Naruto as an even more important figure. She might be more eager to support him in his quests.
Using the term 'bastard' in this context is inappropriate and disrespectful. 'Kushina' is Naruto's mother in the Naruto series. A 'fanfic' is a fan - created fictional work. But this title seems to convey a negative and unkind sentiment towards a character or a work related to Naruto.
Well, it could be that someone who doesn't like Naruto has written a fanfic with a really negative and offensive view, calling Naruto a 'bastard'. However, this goes against the spirit of the original work which is about friendship, growth, and perseverance. Most Naruto fans would probably be outraged by such a description in a fanfic.
On a larger scale, the balance of power in the ninja world could be affected. Neji was a strong and capable shinobi, and his absence could create opportunities for enemies to take advantage. Naruto's actions could also damage the reputation of Konoha as a whole. Other villages might view Konoha as unstable or dangerous if one of their most well - known shinobi can turn on his own comrades. This could lead to increased tensions and potential conflicts between the different ninja villages.
I'm not sure if there is such a specific fanfic. There are a vast number of Naruto fanfics out there, but this description seems rather unorthodox and disrespectful to the original work. The Naruto series has a rich lore and many positive aspects that most fanfics tend to explore in more positive and creative ways, rather than using such derogatory terms.
It could be that they have a very different interpretation of Naruto's character. However, this is a very extreme and negative way of expressing that view. They might not understand or appreciate the values and growth that Naruto represents in the original story, and instead choose to write something so unkind.
In some 'naruto multiwives fanfic', Hinata is often a potential wife for Naruto. Given their relationship in the original series, it's easy to imagine her as one of his wives. Sakura could also be a candidate. Even though her feelings were mainly towards Sasuke in the original, in fanfic, things can be different. And then there's Ino. She has her own charm and abilities, and could be one of Naruto's wives in the fanfic world.
Kakashi could still be an important ally even though Naruto has become a Jounin. Kakashi has a wealth of experience and knowledge that Naruto could still learn from. He could offer advice and assistance when Naruto faces tough challenges in his new role.
Well, it might change the way people in Konoha treat Naruto. They might show more respect or have different expectations of him. For example, some might think he should be a natural leader like his father.
Well, in some fanfic concepts, Kurama might release Naruto's potential by sharing its own chakra in a more direct and unrestricted way. Maybe it could be like a full-on infusion of Kurama's power, which then unlocks hidden abilities within Naruto that were previously dormant due to Naruto's own self - imposed mental blocks or lack of proper training to handle such power.