Since Naruto doesn't care about the prophecy, he might get into conflicts with the village elders or those who believe in the prophecy. This could lead to him being ostracized for a while, but then he could prove that his way is also valid by achieving great things on his own terms. Maybe he discovers a new power source that has nothing to do with the prophecy - bound powers.
A plot development could be that Naruto's attitude spreads to other characters. They start to question the long - held beliefs about prophecy as well. This could cause a shift in the shinobi world's ideology. The younger generation, seeing Naruto's disregard for the prophecy, might be more willing to take risks and explore new ways of being shinobi. This could lead to new alliances and rivalries that are not based on the traditional prophecy - driven motives.
Well, Naruto's disregard for the prophecy might make some characters respect him more. For example, Sasuke could see Naruto as more of an individualist, breaking free from what's 'predetermined'. It could also make his friends like Shikamaru and Kiba see him as a bit of a rebel in a good way. They might be more intrigued by his independent thinking.
It could also be due to some sort of mind - control or curse. In the Naruto universe, there are many powerful jutsus and dark magics. Perhaps an enemy has cast a spell on him that makes him not care about his own life. This would be a dangerous situation as he could be easily manipulated into dangerous situations without self - preservation.
One possible plot development could be that Naruto goes on a journey to try and understand love. He meets different people along the way who teach him about different aspects of love, like an old sage who tells him about self - love and how it's the foundation for understanding other kinds of love. Another could be that his friends try to set him up on dates to help him figure it out, but it just leads to a series of comical misunderstandings.
Naruto could become more self - centered. Since he no longer has the overarching goal of protecting Konoha, he might focus more on his own needs and desires. For example, he could pursue personal power or adventure without considering the implications for the village.
He could become more idealistic. Since he doesn't understand hatred, he might strive to create a world where everyone gets along without any grudges. This would make him a very different kind of hero compared to the Naruto in the original series.
One possible reason could be that Naruto has been mistreated by the villagers in Konoha for a long time. Despite his efforts to gain acceptance, if he's constantly faced with rejection or unfair treatment, it might lead to him not caring. For example, when he was a child, many villagers shunned him because he was the host of the Nine - Tails. This continuous negative experience could build up over time and cause him to lose his sense of loyalty to Konoha.
It might be for creative exploration. Writers often like to play with established characters and relationships. By making Naruto not care about Team 7, they can explore new story directions and character interactions that wouldn't be possible in the canon story.
Well, it could be that the fanfiction is set in a very different universe where Naruto has different upbringing or experiences. But this is quite a stretch because Naruto's caring side is so deeply rooted in his story. It might also be that the writer is simply trying to create shock value by presenting such a counter - intuitive view of Naruto. But in general, it's not in line with the essence of Naruto as we know him from the original series, and it might be a bit of a gimmick to make the fanfiction stand out in a sea of more traditional Naruto stories.
It could be that she has some past trauma related to Naruto's birth or the events surrounding it. For example, if she had a difficult pregnancy or if there were some threats to Naruto's life right from the start that made her distance herself out of fear. Another possibility is that she is under some sort of mind control which makes her act as if she doesn't care.
One possible reason could be a misdirection in his goals. If in the fanfiction he is overly focused on proving himself to the village, he might think that family is a distraction. So, he starts to distance himself from his family to concentrate more on getting recognition from the village.