In a Naruto and Bleach crossover fanfiction with the banish concept, Naruto could be banished to Soul Society. He might shock the Shinigami with his chakra abilities and unique ninja techniques. There, he could get involved in the battles between the Soul Reapers and Hollows, perhaps even finding a way to bridge the gap between his ninja world and the afterlife world of Bleach.
They're interesting because they take the already rich Naruto universe and add a new level of power and mystery. Banishing a god is no small feat, so it allows for epic battles and showcases Naruto's potential beyond what we see in the original series.
There's also a fanfiction where Naruto, after years of training, is able to banish a god that has been secretly influencing the actions of the Akatsuki. It delves deep into the lore of the Naruto universe and shows how Naruto's bonds with his friends help him in this seemingly impossible task. The author does a great job of creating new jutsu and strategies for Naruto to use against the god.
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.
One possible reason could be for Naruto's protection. Maybe Minato knew of some great danger that was coming for Naruto and he thought that banishing him would keep him out of harm's way. Another reason might be related to some prophecy or hidden power within Naruto that Minato feared could be misused if Naruto stayed in the village.
By combining different worlds' rules. For example, if Naruto is banished to a world like Middle - earth from Lord of the Rings, his ninja skills like shadow clones would be very different from the magic there. It can create unique situations where he has to learn new powers or face new enemies. Also, his banishment can be a way to introduce a fish - out - of - water story, which always has potential for interesting plots.
Well, in a fanfic scenario, Kabuto could be an S - rank ninja that Naruto banishes. After all, Kabuto has a lot of power and knowledge, and if he were to use it for evil again, Naruto would have no choice. Also, Nagato could be another candidate. If Nagato were to regain his old beliefs and start attacking villages again, Naruto might banish him to stop the cycle of violence. And of course, there's Obito. If Obito didn't have his change of heart in the fanfic and continued to be a threat, Naruto would surely consider banishing him.
One possible reason could be fear. If Naruto was 'godlike' in this fanfiction, his power might be uncontrollable and Minato, as Hokage, might feel it's a threat to the village. He could think that Naruto's power could attract too many dangerous enemies or cause destruction accidentally.
One possible reason could be a misunderstanding. Maybe some false information was spread about Kushina being a threat to the village, and Naruto, in his role as Hokage or a powerful figure, felt he had no choice but to banish her to protect the village. Another reason might be related to some sort of dark influence or curse that made Naruto act out of character and banish her.
It could also be due to Naruto's outcast status in the village initially. Danzo might think that banishing Naruto would be an easy decision as Naruto doesn't have many supporters at first. He might believe that by getting rid of Naruto, he can maintain the status quo in the village and prevent any disruptions that Naruto's presence might cause in the future.