Another idea for the fanfiction could be that they are both orphans in this story. They find each other and, because of their Uzumaki heritage, they sense a connection. They start to live together and support each other. They learn ninjutsu from different sources and then combine their knowledge to become very strong. As they grow, their relationship becomes more complex, with elements of friendship, family - like love, and maybe even romantic feelings.
One possible plot could be a story where Naruto and Kushina grow up together in a different timeline. They could face the challenges of the ninja world side by side. Maybe they'd train together under Minato and form a unique bond that's different from the usual mother - son relationship. This could lead to them having adventures and making friends together, and their combined skills might change the course of some of the events in the Naruto universe.
One possible plot could be that since they are the same age, they grow up as friends and training partners. They face the challenges in the ninja world together from a very young age. Naruto, with his positive attitude, and Kushina, with her strong will, might end up changing the fate of the Hidden Leaf in a different way compared to the original story.
If Naruto was the same age as Kakashi, the power dynamics would be very different. Naruto might be more skilled and mature from the start. He could have been part of the earlier battles against the Akatsuki. Also, his relationship with Sasuke might have a different flavor as they would be closer in age and experience. For example, they might be more like equals in their rivalry, rather than Naruto constantly chasing Sasuke's level of skill.
One possible plot could be that Naruto, being the same age as Minato, is trained directly by Minato from the start. Minato could pass on all his skills and knowledge without the need for other mentors like Jiraiya or Kakashi. They could face the threats to the village together much earlier, and Naruto might grow up with a different sense of confidence and leadership, having his father by his side all along.
One possible plot could be that they meet at a young age during a shinobi training event. Since they are the same age, they might form a friendly rivalry. They could compete in various skills like ninjutsu or stealth. As they grow up, this rivalry might turn into a deep respect for each other's abilities.
The plot could involve Naruto and Hiruzen competing for the position of Hokage at the same age. Naruto, with his strong will and determination, would try to prove himself worthy. He might have different friends and allies in this version. For instance, he could team up with some of the older shinobi who were Hiruzen's contemporaries. Their rivalry could lead to new and exciting battles and political intrigue within the village.
One possible plot could be that since they are the same age, they become rivals in the ninja academy. Naruto, with his determination, and Mikoto, with her Uchiha pride, constantly compete in various skills like ninjutsu and taijutsu. Their rivalry could lead to an unexpected friendship as they gradually understand each other's struggles.
If Naruto and Kushina were the same age, Naruto might develop more of an empathetic side earlier. Since Kushina was known for her strong will and compassion, being around her could make Naruto more in tune with his emotions. He might not be as reckless as he was in the original story because he'd have Kushina to balance him out.
In a more light - hearted plot, Fem Naruto and Kakashi could start a friendly prank war in the village. Since they are the same age, they might have a similar sense of humor. This could lead to some hilarious situations where they constantly try to out - prank each other, but also learn important lessons about friendship and respect in the process.
A plot twist could be that with Naruto at the same age as Minato, the Nine - Tailed Fox attack on the village might play out very differently. Naruto, already having his own strong will and the potential of a jinchuriki, could team up with Minato to fight off the fox in a different way. Maybe they find a way to seal the fox without sacrificing Minato, which would completely change the future of the Hidden Leaf Village. It could also mean that Naruto grows up with both his parents, leading to a much more stable and perhaps different - natured Naruto, less lonely and more confident from the start.
One possible plot twist could be that since they are the same age, Naruto might become Tsunade's rival in the medical ninjutsu field. Naruto, with his determination, could develop his own unique style of healing that challenges Tsunade's traditional methods. This could lead to a friendly competition between them, which in turn would force both to improve their skills and knowledge.