Another plot could involve Minato traveling back in time and meeting his parents. He could learn more about his family's past and secrets that were lost over time. This could lead to him unlocking new powers or abilities that were somehow related to his family heritage. He might also be able to use this new - found knowledge to better protect the village in his original time.
One idea could be that Minato and Kushina travel back to the time when the Hidden Leaf Village was first founded. They could use their modern - day knowledge and skills to help shape the village in new ways, like introducing new jutsu training methods. Another could be that they go back to a time when a great war was about to start and they use their powers to prevent it, thus changing the future of the ninja world.
One idea could be that fem Naruto travels back in time and has to hide her identity from Minato at first. She could then gradually reveal herself and use her future knowledge to help Minato prevent some of the tragedies that occurred in the original timeline. For example, she might know about certain Orochimaru plots and stop them before they start.
Definitely Kushina should be included. She was an important part of Minato's life. Their relationship could be explored in new ways with the time travel element. For example, Minato could try to protect her even better from the start. Jiraiya is also a great choice. Minato could learn more from him earlier or even teach Jiraiya some of his future knowledge.
In this fanfiction, Sakura might be on a mission to change the past in order to save someone important in her present. Minato could initially be suspicious of her but then come to trust her as they face common enemies. They could end up influencing each other's future and past in unexpected ways, like Sakura teaching Minato some basic first - aid knowledge that he then passes on, which changes the course of some future battles.
A possible plot could involve Minato traveling to a future where the concept of chakra has evolved. He has to adapt to this new form of chakra usage. Along the way, he meets his own descendants and realizes the long - lasting impact of his actions in the past. He also tries to find a way back to his own time while making a mark in this future world.
One plot idea could be their first meeting. Maybe Minato saves Kushina from some bullies in the ninja academy. It could show how their initial attraction starts. Another idea is a mission they go on together. They face challenges and have to rely on each other's skills, which deepens their bond. A third plot could be about them preparing for their wedding. They deal with the stress of family expectations and also the joy of starting a new life together.
One idea could be that the Vault Hunters accidentally stumble upon an ancient alien device that sends them back in time. They then have to navigate the past Borderlands, which may have different versions of their enemies or allies. They could also meet the ancestors of the characters they know and change the course of history in unexpected ways.
In a fanfiction plot, Starkiller could travel to different time periods to collect powerful artifacts. Each time period has its own challenges and enemies. As he travels through time, he starts to understand the true nature of the Force and how it has been manipulated throughout history.
If Minato time - travels, it could change a lot. For instance, if he prevents the Nine - Tails attack, Naruto would grow up in a very different environment. He might not be the underdog he was in the original story. Also, if Minato changes things during the Uchiha clan's situation, Sasuke's story would be completely different. Konoha's political situation would also be altered. There would be less animosity between different clans perhaps.
His relationship with his friends could change significantly. For example, if he travels back to a time when they were younger, he might be more protective of them. He could also inspire them in different ways, leading to stronger bonds. His relationship with his sensei might also be affected. He might be able to offer new insights based on his future experiences.