The protagonist is obviously an important character. Since he is the one banished from the hero party. There must also be characters in the hero party itself that play a role, like the leader of the party who might have made the decision to banish him. And then there are likely characters that the protagonist meets after being banished, such as new allies or enemies in his new journey.
The main themes in 'Banished from the Hero Party Novel' include independence. Once banished, the protagonist has to learn to stand on his own feet. There is also the theme of growth. He grows not only in terms of his skills but also as a person. And the theme of non - conformity. Instead of following the set path of the hero party, he carves out his own unique journey.
It could be a rogue demigod who has a vendetta against Percy. This demigod might have spread the false rumors that led to Percy's banishment in the first place, and now he wants to make sure Percy never returns. He uses his own powers and manipulates other demigods and monsters to achieve his goal.
One main theme is self - discovery. The protagonist, after being banished, has to find his own path and identity outside of the hero's party. Another theme could be redemption. He might be trying to prove himself in a new way. And also friendship, as he may form new relationships away from his former comrades.
One possible plotline could be that Naruto mistakes a character from My Hero Academia as a threat to the ninja world. So, he banishes them to prevent any potential harm. For example, if he sees a powerful quirk user like All Might in the wrong context, he might think they are a new kind of enemy.
In this novel, the banished character often has to deal with the stigma of being cast out. They might encounter different situations that force them to re - evaluate their skills and values. For example, they could find that their abilities, which were perhaps undervalued in the hero's party, are actually very useful in other contexts. This can lead to all sorts of adventures and character development as they build a new life away from the group they were once a part of.
The protagonist who is banished is obviously important. He drives the story forward as he deals with his new life. There's probably a character who befriends him after the banishment, which is also a key character.
One key theme could be self - discovery. The protagonist, being banished from the hero's party, has to find his own path and identity outside of the group he was once part of. Another theme might be the idea of misjudgment. Maybe he was wrongly banished, which shows how quick assumptions can lead to unfair outcomes. Also, there could be a theme of growth. Away from the hero's party, he has the chance to develop his skills and abilities in new and different ways.
One of the main themes is self - discovery. The protagonist, after being banished, has to figure out his own worth outside of the hero's party. Another theme could be redemption. He might be seeking to prove himself in a different way.
The protagonist is the main character who gets banished from the hero's party. There might also be the leader of the hero's party who plays an important role in the banishment decision. And perhaps there are some side characters that the protagonist meets on his journey after being banished.