Maybe in the fanfiction, there is a powerful enemy who wants to use Naruto's connection to his parents against him. So, they somehow manage to bring Minato and Kushina back to the physical world. When they meet Naruto, it's an emotional moment. They form a plan to defeat the enemy together. Minato uses his strategic skills, Kushina her strength, and Naruto his own unique abilities learned over the years.
In another idea for the fanfiction, Minato and Kushina are in a sort of limbo state. Naruto, through his strong will and love for his parents, is able to break through the barriers and reach them. They meet in a beautiful, otherworldly place. They spend time together, with Minato and Kushina getting to know the man Naruto has become. Naruto, in turn, finally gets the parental love and guidance he always craved in a very special and intimate setting.
One possibility could be that Naruto discovers a long - hidden secret about his family that makes him feel betrayed. For example, he might find out that Minato and Kushina had made a deal with a dangerous enemy in the past that put the village at risk. This would be so against Naruto's values of protecting the village and his friends that he decides to leave them.
Well, perhaps in this fanfiction, Evil Minato and Kushina find Naruto when he is at a very vulnerable state. They see an opportunity to use him for their evil plans. Their plans might involve using Naruto's Jinchuriki power to open a portal to a dimension full of dark energy. But Naruto, being the resilient character he is, tries to resist them. He calls upon the memories of his friends and the village that has always supported him, and he gradually starts to turn the tables on his 'evil' parents.
Perhaps in this fanfiction, Minato and Kushina leave Naruto because they are cursed. They fear that the curse will harm Naruto if they stay close. So, they go into exile. As Naruto grows up, he starts to discover clues about his parents' real reason for leaving and sets out on a quest to find them and break the curse. This could lead to many adventures and character - development moments for Naruto.
One possible plot could be that with Minato and Kushina alive, Naruto grows up in a complete family. They could train Naruto together, passing on their unique jutsu. Maybe Minato could finally fulfill his dream of bringing long - lasting peace to the Hidden Leaf with his family by his side. And Naruto would have a different kind of confidence and growth, not having to face the loneliness he did in the original story.
One possible plot twist could be that Naruto, instead of seeking acceptance in the village, decides to leave and find his own path outside. He might discover a hidden group or power that the village was unaware of and use it to come back and prove himself to his parents. Another twist could be that Naruto is taken in by an enemy of the village who sees his potential and trains him to be a powerful ninja, but for their own evil purposes. However, Naruto, having been ignored by his parents, might be more susceptible to this false sense of belonging.
One possible plot twist could be that with Minato and Kushina alive, Naruto's training would be completely different. Minato, being a prodigy, could teach Naruto advanced jutsu much earlier. And Kushina might pass on some unique Uzumaki clan techniques. Maybe they would also change the political situation in Konoha, as Minato was a highly respected Hokage. This could lead to different alliances and power dynamics within the village and among the other ninja villages.
It might be due to jealousy. If Minato was getting more attention or praise in the village for his achievements while Kushina felt overlooked, that could create resentment. Say, Minato was constantly being hailed as a hero for his speed and battle tactics, and Kushina, who also had great power, felt like she was in his shadow.
A plot twist could be that they see Naruto losing his way. This would be a huge shock for them as they always believed in Naruto's goodness. But then, as the story unfolds, Naruto finds his way back due to a memory or a message from his parents that he somehow receives in a moment of crisis.
One possible plot could be Minato and Kushina looking on with pride as Naruto marries Hinata. They might be reminiscing about their own relationship and how far Naruto has come. They could also be interacting with the other guests, sharing stories of Naruto's childhood that the others may not know.
One possible plot could be that Minato and Kushina are somehow brought back to life in a spiritual or semi - physical form. They then embark on a journey through the ninja world to find Naruto. Along the way, they encounter various characters who either help or hinder them. Maybe they have to face some old enemies who are still lurking in the shadows and trying to stop them from reuniting with Naruto.