As I don't have knowledge of this novel, we can only make assumptions. Pheonix is the obvious main character. There might be characters that are part of the 'world' that opposes Pheonix, like powerful leaders or mobs. There could also be characters who are initially on the fence but later become important to Pheonix's cause. Maybe there's a love interest who gives Pheonix emotional support during their fight against the world. Or a character from Pheonix's past who resurfaces and has a big impact on the story, either helping or hindering Pheonix's fight against the world.
Not having read the book, it's difficult to name the exact main characters. However, if the title is any indication, Pheonix is likely the central figure. There could be antagonists who represent the 'world' that Pheonix is against. And perhaps there are other characters, such as a sidekick or a wise elder, who help Pheonix in their struggle. For example, there could be a character who provides Pheonix with valuable information or a special weapon to fight against the world's challenges.
Well, without having read it, it could potentially be a story where 'Pheonix' is some sort of extraordinary being that stands alone against the whole world. Maybe there are themes of self - discovery, power struggles, and the fight for survival in a world that is against the protagonist. For example, Pheonix might have special abilities that make the world view them as a threat or an outcast, and they have to use their wits and powers to overcome all the difficulties thrown at them.
Since I'm not familiar with the 'pheonix festa light novel', it's difficult to name the exact main characters. But it's likely to have characters who are directly involved in the Phoenix Festa. There could be a hero - type character who is trying to make a name for themselves in the festa. There might also be some supporting characters like friends or mentors who help the main character along the way.
Since it's a romance novel, there could be a pair of lovers as the main characters. One of them might be a person with a special gift or ability related to the blue pheonix. There could also be a secondary character who acts as a friend or a rival in the story.
I don't have enough information to know the main characters. It could be the phoenix itself as a main character, or perhaps there are other characters that the phoenix interacts with, like a wizard or a fairy.
The phoenix is the central figure no doubt. There could be a group of antagonists, such as a council of dark mages who see the phoenix as a threat to their power. On the other hand, there may be a wise old sage who guides the phoenix, even if only from a distance. There might also be ordinary people in the story who are affected by the conflict between the phoenix and the world, and their reactions and interactions with the phoenix can also be important parts of the story.
Since I haven't read it, I can only guess. There must be the princess herself. There could also be a prince who might be either an ally or a rival. And perhaps a wise old mentor who guides the princess through her difficulties.
In 'the princess against the world novel', the main character is of course the princess. There might be her loyal servants or friends who play important roles. Maybe there's an old wise mentor figure who guides her in her fight against the world. And on the other side, there could be those who oppose her, such as the leaders of other kingdoms or some dark creatures from a forgotten realm.
Obviously, the princess is one of the main characters. There may also be a villain or a group of villains who she is seeking revenge against. And perhaps a love interest who either helps or hinders her revenge plan.
I'm not familiar with the specific 'rise of the pheonix by aquaris dragon fanfic'. However, given the title, the phoenix is bound to be a central character. There may be characters who are part of the phoenix's origin story, like its parents or the ones who first discovered it. There could also be characters from different factions or species. For example, there might be a group of elves who have a prophecy about the phoenix's rise and are either trying to make it come true or prevent it. Another possibility is a human character who has a special bond with the phoenix, perhaps a friendship or a magical connection that plays a crucial role in the phoenix's journey to rise.
I'm not sure specifically as I haven't read it in detail. But typically, there would be a protagonist who is likely at the center of the story, facing the challenges of the loveless world.