Since I'm not acquainted with this light novel, it's hard to say exactly. However, in a story like this, aside from the obvious character who returns in the girl's body, there could be antagonists. Maybe there are those who oppose the return or those who want to use the situation for their own gain. And of course, there could be other supporting characters like neighbors or classmates who add depth to the story.
I don't know for sure, but I would assume that the character who returns to earth in the girl's body is a central character. There might also be friends or family members of the girl in the story. They could play important roles in helping the main character adjust to their new situation or in uncovering the mystery behind the body - swapping.
Since I haven't read the novel, I can't say for sure. But usually in such a novel, there would be the protagonist who is the one returning to Earth to become a god. There might also be some side characters like friends or family of the protagonist who react to their new - found powers.
I haven't actually read this light novel specifically. But generally, in such stories with a body - swapping concept like this, there might be interesting plots like the protagonist trying to adapt to the new body, dealing with relationships in this new form, and exploring the world from a different perspective. Maybe she has to face challenges that are unique to being in a girl's body, like different social expectations.
Since I'm not familiar with this light novel, it's hard to say who the main characters are. But in many light novels, there are often young protagonists. They could be boys or girls with special abilities or destinies. In 'Return of the Swallows', the main characters might be related to the swallows in some way, like they are protectors of the swallows or are on a mission because of the swallows.
I don't know as I haven't read it, but it could be the god of sky and earth themselves as the main character, perhaps with some supporting characters like other deities, prophets, or humans who play important roles in the story.
I don't know since I haven't read the novel. But it could be a young hero who is chosen for this 1000 - year training.
It's difficult to say exactly who the main characters are without reading the 'earth's core light novel'. However, it's common in such novels to have a diverse group of characters. There could be a young and curious protagonist who is the driving force behind the expedition to the core. Alongside them, there might be an experienced mentor figure, and perhaps a character with a special ability or power that becomes crucial during their adventure in the core.
Since there is no information about the 'ark earth online light novel' at hand, we can only guess. Maybe there is a hero - like character who starts off as an ordinary person but discovers their hidden potential in the Ark Earth online world. There could be a sidekick character who provides comic relief and support. And there may be an antagonist, a powerful figure in the online world who tries to disrupt the harmony or stop the protagonist from achieving their goals.
Well, based on the title, the king is surely a main character. There could be antagonists who oppose his return, like rival lords or power - hungry nobles. And perhaps there are some key characters who help the king during his return, such as a wise wizard or a fearless warrior who believes in the king's cause.
I don't know for sure since I haven't read the novel. But it could be the ranker themselves as the central character. Maybe there are also some friends or rivals from their past who play important roles.
I'm not entirely sure as I haven't read every detail of the novel, but the frozen player himself is surely a main character. There might also be some characters who are important in the world he returns to, like a guide or a rival who challenges him in different ways.