One common theme is redemption. Naruto, being banished, often has to prove himself all over again in the new crossovers, seeking redemption for whatever led to his banishment in the first place.
Isolation and loneliness are typical at the start. When Naruto is banished, he's cut off from his home and friends. In the crossover aspect, this isolation is intensified as he's in an unfamiliar world. But as the story progresses, he overcomes this through his interactions with new characters. Also, the theme of defying fate is present. Despite being banished, Naruto doesn't accept his fate of being an outcast and instead rises up, using his skills and newfound allies to change his situation for the better.
Power growth is also a big theme. When he's banished and crosses over, he's exposed to new environments and powers. For example, he might learn magic in a world where ninjutsu doesn't exist, and the story focuses on how he develops and masters these new powers. This often involves training arcs and battles against powerful foes. Moreover, friendship and finding a new family or group to belong to is another common theme. Since he's been banished from his home, he has to create new bonds in the crossover worlds, and these relationships are often central to the story's development. They can be with other outcasts or with powerful beings who take him under their wing.
One common theme could be the clash of cultures. Naruto's ninja culture and the Pokemon trainer culture are very different. So exploring how characters adapt to this new culture they're exposed to is a theme.
Another theme is adaptation. He has to adapt to the new rules, cultures, and powers of the crossover world. For example, if it's a crossover with a magic - based world, Naruto has to learn how magic works and how to use it. This theme of adaptation makes for some interesting character development.
Conflict is a very common theme as well. There are often conflicts between Percy and the new characters he meets, either because of misunderstandings or because they have different goals. And there's also the overarching conflict of Percy trying to find a way back home or to reverse his banishment. This conflict drives the plot forward and keeps the story exciting.
One common theme could be redemption. Maybe the banished character has to go through a journey to prove themselves worthy again, especially in the context of their marriage. Another theme might be the struggle against the stigma of being banished while trying to maintain a relationship.
One of the themes that often pops up is the search for identity. Without the framework of Konoha, Naruto has to figure out who he really is. He might question his loyalties, his goals, and his values. Friendship is also a big theme. We might see how his true friends react to his banishment and if new friendships are formed on his journey.
One common theme is Naruto's struggle for acceptance. After being banished, he has to find a new place in the world where he can be himself and grow. Another theme could be revenge. He might seek revenge against those who banished him. And of course, power - building is a major theme. Naruto has to become powerful in his new situation, often in ways different from what he learned in the village.
Another common character might be Superman. If it's a crossover with the DC universe, Superman's sense of justice and his acceptance in his new world (Earth) could contrast with Naruto's banishment. Naruto could learn a lot from Superman about using his powers for good and also about being a symbol of hope, which could inspire him to find his own way to be a positive force even after being banished from his clan.
Isolation is often explored. Being banished means being cut off from the community they once knew. Fanfiction might delve into how the ninja copes with this isolation, whether they become bitter or find new ways to connect with others despite the distance.
In 'naruto banished fem kyuubi fanfiction', a frequent theme is the search for identity. The fem Kyuubi, being banished, may struggle with who she is and her place in the Naruto universe. Also, the theme of friendship or alliance often appears. For example, she might form an unexpected bond with Naruto or other characters. Additionally, the theme of overcoming prejudice is quite common. Because she is the Kyuubi, she may face discrimination from the villagers, and the fanfiction could be about her fighting against that prejudice.
In 'Naruto x Temari banished' fanfiction, the theme of exile itself is explored in depth. How do they cope with being outcasts? Do they resent their villages or try to find a way back? Also, the theme of cultural exchange can be present. If they travel to different regions, they might encounter new cultures and ways of life, which in turn affects their own beliefs and values. This can be really interesting as it shows how their characters can be molded by new experiences outside of their familiar shinobi world.