Well, for a Naruto marries Kushina time travel fanfiction, we could consider that Naruto is on a mission when a mysterious force pulls him back in time. He lands in the era when Kushina is alive. At first, Kushina might be a bit wary of this strange boy from the future. But Naruto's kind heart and his determination to protect her win her over. As they spend more time together, they start to fall in love. Naruto might also introduce some future ideas and concepts that make him even more appealing to Kushina, and eventually, they get married.
In a time travel fanfiction where Naruto marries Kushina, the story could begin with a strange anomaly in the space - time continuum. Naruto is sent back and realizes he has a chance to change things for the better. He uses his knowledge of the future to protect Kushina from danger early on. This makes her see him in a new light, and as they grow closer, their relationship blossoms into a marriage. It could also explore how this changes the future he came from.
One way to write it could be to have Naruto somehow gain the ability to time travel. Maybe through a powerful jutsu gone wrong. He then travels back in time and meets a young Kushina. He already has feelings for her because of his motherly connection to her in his own time. He could start by helping her out in small ways, and over time, they develop a romantic relationship that leads to marriage.
In a time travel fanfiction where Naruto marries Kushina, the impact on the Naruto world would be multi - faceted. Genetically, it's a very strange situation. But if we look past that, politically, their union could bring about peace faster. Since Naruto has the ideals of the future and Kushina has the influence of her clan in the past. Socially, it would shock many. People would have to adjust to this new relationship. And in terms of the ninja arts, Naruto could teach Kushina some future techniques, and she could pass on her unique skills to him, changing the way battles are fought in that time period.
A significant difference would be the power dynamics. In the original, Naruto gains power through his own hard work, training, and the power of the Nine - Tails. In a fanfiction where he marries Kushina, there could be new power - sharing elements. Maybe they combine their Uzumaki chakra in unique ways. Also, the social aspect is different. In the original, Naruto is seen as an orphan trying to find his place. Here, he is part of a powerful couple. This changes how the other characters interact with him and how the story progresses in terms of village politics and alliances.
A possible plot could be that Naruto and Kushina are sent back in time due to a powerful jutsu gone wrong. Once in the past, they decide to prevent the Nine - Tails attack on Konoha. Kushina, with her knowledge of sealing techniques and Naruto's combat skills, could work together to stop the masked man who released the Nine - Tails. This would save many lives and change the future for the better.
In a Naruto and Kushina time travel fanfiction, their relationship dynamics would be fascinating to explore. Kushina could see Naruto as he is now, a powerful ninja, and Naruto would get to experience his mother's presence in a new way. They might team up to train together, with Kushina teaching Naruto some of her unique Uzumaki techniques that were lost over time. This could lead to Naruto becoming even more powerful and having new skills to face his enemies.
At first, it's likely to be a very emotional encounter. Naruto is overjoyed to finally meet his mother, and Kushina is equally amazed to see her grown - up son. They quickly form a strong bond.
Jiraiya could also be one of the main characters. He was Naruto's mentor and had a connection with Kushina's family. He could play a role in helping them adjust to the time travel and also use their knowledge to his advantage in some ways, like getting intel on future threats.
Obviously, Kushina herself would be a central character. Minato could also be involved, perhaps in a complex relationship triangle with Naruto and Kushina. Then there are other female ninjas like Tsunade. She might be intrigued by Naruto's time - traveling knowledge and get involved in the story. Sakura could also be a potential character. If she somehow gets dragged into the time travel, she might have her own role in the harem - like situation around Naruto.
Well, one possibility is that Naruto with the Rinnegan could use his newfound power to protect Kushina during their time travel. Maybe he can prevent some of the tragedies that happened in the past. For example, he could stop the Nine - Tails attack on the village by controlling the beast in a more efficient way with his Rinnegan powers.
In these fanfictions, the relationship between Naruto and Kushina can be explored in a unique way. Since Naruto has the chance to meet his mother in the past, they could form a strong bond much earlier. It might also affect how Naruto views his own identity, as he gets to know his mother on a deeper level. Maybe he could even learn new jutsu from her that were lost over time.
In this type of fanfiction, the time travel aspect could bring in many changes. Maybe Naruto travels back in time and gets to be raised by Kushina who was still alive. This would completely change his upbringing. He could be trained by Kushina and Minato together, which would make him an even more formidable ninja at a younger age. And his relationship with the other villagers would be very different as he would have the love and protection of his parents.