The village would be in chaos. Kushina was a respected figure, and Naruto was seen as a hero. If she attacked him, it would split the opinions of the villagers. Some might side with Kushina, believing she had a good reason, while others would stand by Naruto. This could lead to internal conflict within the village.
For Kushina herself, if she was acting under false pretenses or mind control, she would have to live with the guilt once she realized what she had done. Her relationship with other characters, like Minato if he was still alive in the fanfiction, would also be strained. It could also potentially change the future of the village, as Naruto's growth and development might be stunted or redirected because of this traumatic event.
Naruto would likely be deeply hurt, not just physically but also emotionally. He has always idolized his mother, so an attack from her would be a huge blow to his psyche. His trust in family and those close to him could be severely damaged.
In fanfiction, the idea of Naruto attacking Kushina is very uncharacteristic as they are mother - son. It could be a very dark or alternate universe scenario. Maybe in a plot where Naruto is mind - controlled or in a completely warped reality where family bonds are reversed.
Perhaps there's a time - travel element involved. Naruto from the future, who has been through some horrible experiences, travels back in time and, in a state of confusion or rage, attacks Kushina. Or it could be that a powerful villain has the ability to manipulate Naruto's emotions and uses that power to make him turn on his mother. This would create a very complex and dark plotline that challenges the normal Naruto narrative.
In some fanfictions, it might be due to an alternate timeline or reality. A change in the past could lead to Kushina having different beliefs or loyalties. It could also be related to a new power or curse that affects her judgment and causes her to see Naruto as an enemy. However, this is often a very dark and dramatic turn in fanfiction stories.
One consequence could be Naruto's emotional breakdown. Since Kushina is his mother, her betrayal would be a huge blow to him psychologically. He might start to doubt himself and his place in the world.
The village of Konoha would also be affected. With Minato still alive, he could continue to lead the village and make different decisions. This might change the relationships between Konoha and other villages. For example, there could be more peaceful alliances as Minato is known for his diplomatic skills. Also, Kushina being alive would mean that the Uzumaki clan might have a stronger presence in the village, which could lead to new jutsu developments and a different power balance within Konoha.
One consequence could be that fans who really respect Kushina's character might be more hesitant to engage with fanfictions. If they know that Kushina, in a sense, wouldn't approve, they might feel guilty or less interested in exploring those fictional works.
One possible reason could be mind control. Maybe an enemy of the village found a way to manipulate Kushina's mind and make her turn against her own baby. Another reason might be a misunderstanding. For example, she could have been tricked into believing that Naruto was a threat to the village in some way.
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 major consequence would be in terms of his abilities. Kushina was known for her powerful sealing techniques. So if Naruto becomes her, he might lose some of his unique Naruto - like skills and instead gain more proficiency in sealing. This could change the way he battles. For example, he might rely more on sealing away enemies rather than his usual Rasengan and Shadow Clone techniques. And his role in the village as a protector might also change as he adapts to Kushina's abilities.
He might face a lot of danger on his own. Since he's running away from Kushina who would usually protect him, he could encounter stronger enemies that he's not fully prepared to face.