Another aspect could be that the fanfiction delves into how Kushina's presence affects Naruto's relationships with others. For instance, his relationship with Sasuke could be different. With a strong maternal figure in his life, Naruto might be more stable emotionally and be able to approach Sasuke in a more understanding way, which could potentially change the whole dynamic of their rivalry and friendship.
I have no clear idea. It could potentially be a comic adaptation in a different language or style of the Naruto story. But without more details, it's difficult to provide a definite answer.
Minato could be a common character. Since he was Kushina's husband in the original story, his presence might add some interesting dynamics to the harem scenario. Another could be Jiraiya. His connection to Naruto and his reputation as a bit of a ladies' man could make for an interesting addition to the story.
One possible reason could be for Naruto's protection. Maybe she thought by banishing him from a certain place or situation, she could keep him away from a hidden danger that she knew about. For example, there might be a powerful enemy targeting Naruto specifically, and she believed that by making him leave, he would be harder to find.
Perhaps Naruto finds a way to travel back in time and prevent Kushina's death in the first place. He could use his Sage Mode or some other special ability to manipulate time. And then, by changing the past, he effectively'revives' her in the present. In the Naruto universe, there are all kinds of crazy powers, so time - travel isn't completely out of the question.
One possible fanfiction could be about Kushina finding Naruto in a situation where he's lost in a forest. Maybe she uses her unique chakra sensing abilities to track him down. It could be a heartwarming story of a mother reuniting with her son.
At first, they would likely be a bit awkward since they've never really interacted before. But soon, the bond of mother - son would strengthen. Naruto would share his adventures with Kushina, and Kushina would listen intently, offering her own experiences as an Uzumaki. They would grow to understand and support each other deeply, with Kushina guiding Naruto in both his personal and ninja life.
They would likely develop a complex relationship. On one hand, Kushina is his sensei, so there would be a sense of respect and authority. But on the other hand, Naruto knows she is his mother in the original story, so there might be an underlying emotional bond. It could be a relationship where Naruto looks up to Kushina as a mentor but also feels a deep connection that is different from a typical student - teacher relationship.
It could also be due to some external influence. Perhaps an enemy used some kind of mind - control or manipulation on Kushina. They made her think that Naruto was a threat, so she decided to disown him. In the Naruto universe, there are many powerful villains who could potentially do this kind of thing.
Kushina would be extremely worried. She would rush to Naruto's side immediately and start using her medical knowledge or any available resources to help him get better.