Well, a really cool plot in a Naruto is banished crossover fanfiction could be him being banished to the DC Comics universe. He'd be like a new kind of meta - human. His speed and agility from his ninja training could put him on par with some of the speedsters in the DC world. He could also use his chakra to create energy blasts similar to some of the superheroes' powers. He might team up with the Teen Titans and teach them some of his ninja strategies for combat.
In a Naruto is banished crossover with the Harry Potter universe, Naruto could be banished to Hogwarts. He'd bring his ninja skills, which would be quite different from magic. His ability to move stealthily could make him an interesting addition to the Gryffindor house. He might teach some of the students basic self - defense ninja moves. Or, if he's banished to the Avatar: The Last Airbender world, he could learn about bending and combine his chakra control with bending techniques. His rasengan could be modified to work with water or earth bending.
One plot idea could be Naruto being banished to the world of One Piece. He could join the Straw Hat Pirates and use his ninja skills in new and exciting ways. For example, his shadow clone jutsu could be used for various tasks on the ship. Another idea is that he gets banished to the Bleach universe. He might learn about Soul Reapers and Hollows, and his chakra could be seen as a unique form of spiritual energy there. Maybe he could even train with the Soul Society to become stronger.
One idea could be that Naruto and Tenten are banished due to a false accusation of plotting against the village. They then have to prove their innocence while on the run. They might encounter old enemies who have also been exiled and form an unlikely alliance to clear their names.
One idea could be that the character with the Sharingan is banished due to false accusations of using its power for evil. He then has to journey alone, facing challenges and learning to control his power in new ways. Maybe he meets a group of outcasts who he befriends and together they fight against the unjust system that banished him.
A possible plot could involve the banished mercenary being from a long - lost clan. The reason for his banishment was a false accusation by a rival clan. As he wanders the Naruto world as a mercenary, he discovers clues about his clan's true heritage and power. He then uses his skills as a mercenary to gather allies and resources to prove his clan's innocence and restore its honor. Along the way, he crosses paths with Naruto and his friends and they either help or hinder his quest depending on the situation.
Perhaps Naruto, in his banished state, has some new and unique abilities that Temari is intrigued by. She decides to help him master these powers in secret. As they train together, feelings start to develop. Their relationship could then be a source of conflict between Konoha and Suna as the two villages have different views on Naruto's banishment and his newfound connection with Temari.
One plot idea could be that Naruto, after being banished, crosses paths with Kurenai who is on a solo mission. She initially has her doubts about him due to his banishment but gradually realizes he was wrongly accused. They team up to face a common enemy that threatens the village from afar. This could lead to a growing bond between them.
One interesting plot could be that Naruto is betrayed by the Hidden Leaf Village due to false accusations of being a spy for a powerful enemy. Banished, he then discovers new powers or allies outside the village. He might form his own group of outcasts and come back to the village to prove his innocence and seek revenge on those who wronged him.
Often, in such fanfictions, Naruto's banishment from the clan forces him to re - evaluate his own values and goals. He might start to question the whole ninja way that he was taught in his original world. In a crossover with a post - apocalyptic world, for instance, he could learn that survival doesn't always depend on the traditional ninja skills but on things like cooperation, resourcefulness, and adaptability. This realization could then shape his character in a new and interesting way as he navigates through both the crossover world and his relationship with his former clan.
One idea could be that the banished Naruto discovers the female Kyuubi's true nature. He realizes she's not just a force of destruction but has her own emotions and desires. As they interact, Naruto starts to see her as an ally. For example, she could help him gain new powers in secret while he's exiled, and together they plan to prove his innocence to the village.
Perhaps there's a political conspiracy in the village. Naruto and Shikamaru discover some dark secrets that certain powerful people in the village don't want exposed. So, they are banished to keep them quiet. They then form an alliance with other outcasts and work towards uncovering the truth and returning to the village to set things right. This could involve a lot of action scenes as they fight off those sent to stop them.
In this fanfiction, Naruto and Kakashi are banished because of a prophecy that some in the village misinterpret. The prophecy seems to suggest they will bring doom, but in reality, it's about a different kind of change. While banished, they explore different lands, learn new jutsu from other ninja clans, and eventually return to the village stronger and wiser, proving the prophecy was misread.