At first, Naruto and Kushina might start to distance themselves from Minato. They could avoid him and not talk to him as much. As time goes on, the hatred might grow deeper. Naruto could start to oppose Minato in public or in important village matters. Kushina might also try to influence others in the village against Minato.
One possible fanfiction could be about Minato and Kushina watching over Naruto from the afterlife as he grows into a great ninja. They could be his silent guardians, influencing his decisions in subtle ways.
One interesting fanfiction could be about Minato and Kushina's relationship before Naruto was born. It might explore how they fell in love and their hopes for the future. Another could be a story where Naruto discovers some hidden secrets about his parents through some magical or mysterious means. Maybe a time - travel fanfiction where Naruto goes back in time and gets to meet his parents when they were young.
One idea could be that as Minato is dying, he passes on his special jutsu knowledge to Naruto in a final moment of father - son connection. Kushina, on the other hand, tries to comfort Naruto while also mourning Minato.
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.
Their relationship was based on mutual respect. Minato respected Kushina's strength and determination, and Kushina respected Minato's skills and leadership qualities.
It could completely change the dynamics of the Naruto universe. Their presence might have prevented many tragedies and shaped Naruto's life differently.
The implications would be huge. It would completely shatter the positive family image that the Naruto series usually portrays. Fans who love the relationship between Naruto and his parents would be very shocked and possibly offended.
One possible reason could be a misunderstanding. Maybe Naruto gets involved in some dangerous situation and they disagree on how to handle it. For example, if Naruto wants to take on a powerful enemy alone but Minato and Kushina think it's too risky.
One great Minato and Kushina AU fanfiction could be 'The Alternate Life of Minato and Kushina'. In this fic, they might be in a world where the Nine - Tails attack never happened, and they get to raise Naruto in a peaceful Konoha. It shows their family life in a different light.