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.
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.
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.
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.
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.
Well, in such a fanfic, perhaps it might explore Naruto's struggle with the stigma of being an outcast in a different way. It could show how he overcomes the cruel rumors and discrimination.
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.
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.
In the original story, Naruto is an orphan but not stigmatized as a 'bastard child'. So this fanfic clearly changes the social perception of Naruto in the village. In the original, his main struggle is about being alone and getting recognition as a ninja, while here it adds a whole new layer of social discrimination.
Reacting to this title, first, we should recognize that the use of the word 'bastard' is inappropriate. We can choose to ignore it if we don't want to engage with offensive content. However, if it's part of a community where respect and positive values are promoted, it could be a good idea to let the creator know that such a title is not acceptable. This could be a chance to educate about the importance of respectful language in relation to fictional works and their characters.