At first, Naruto is probably shocked and confused. He might not understand why the village would take such a harsh step just for hurting Sasuke. He may feel betrayed, especially if he thought he had friends and allies in the village.
I'm not entirely sure specifically as there could be many different takes in fanfiction. It might involve Naruto making the decision to banish Shizuka for various reasons like she could be a threat to the village, or there could be some political intrigue involved.
It's popular because it offers a new and different perspective on the Naruto universe. The idea of Naruto being banished is a big departure from the original story, and adding a harem element brings in a whole new set of relationship dynamics to explore.
I'm not entirely sure specifically as there could be many different takes in such a fanfiction. But generally, it might be about Naruto being banished to the west and could involve his adventures in that new, unfamiliar region. Maybe he has to face new enemies, make new allies, and deal with the unique cultures and challenges of the western - like area in the Naruto universe.
If Naruto was banished in fanfiction, it would likely be a turning point. He could encounter new allies and enemies, and his character could undergo significant changes as he adapts to his new situation. Maybe he'd even discover hidden powers within himself.
They might become more reliant on each other. Since they are both banished, they are in a similar situation. They could form a stronger bond as they face the challenges of being outcasts together. For example, they would need to find shelter and food, and this shared struggle could bring them closer.
In this type of fanfiction, it's possible that new characters are introduced. For example, there could be a mysterious figure who has knowledge of the Mokuton and takes Naruto under their wing while he's banished. Another main character could be an enemy who wants to take Naruto's Mokuton power for themselves. And of course, Naruto's friends from Konoha might also be important, as they might be conflicted about his banishment and try to find a way to bring him back.
In this type of fanfiction, the plot might involve Naruto being exiled due to the council's fear of his growing power. They may see him as a threat to the established order in the village. Naruto, being banished, could then go on a journey to become even stronger outside the village, perhaps finding new allies and learning unique jutsu.
Well, it could be a plot where Naruto, for some reason, banishes the RWBY characters to another dimension. Maybe he sees them as a threat to his world. For example, their unique abilities might disrupt the balance in the Naruto universe.