Since it's called 'emperor's domination', the emperor must be a central figure. There might also be his advisors or generals. Maybe there are some characters who oppose his rule, like rebel leaders or ambitious nobles that could also be important characters in the story.
There could be a loyal general. For example, in some stories, this general helps the emperor in battles and political maneuvers. They have a deep bond of trust and respect. The general is often highly skilled in warfare and has a strong sense of loyalty towards the emperor.
I'm not entirely sure as I haven't read it in detail. But generally, it might involve the story of an emperor, his rise to power, political intrigue, and battles perhaps.
Maybe there is a female character who is either the emperor's love interest or a powerful sorceress who has some connection to the sword. She could be helping or hindering the emperor in his journey with the sword. And there could be an antagonist, perhaps a rival emperor or a dark lord who wants to take the sword for his own evil purposes.
Since I'm not acquainted with this light novel, we can only make some educated guesses. The emperor is surely a key character. There could be a young and ambitious person, perhaps a commoner who by some twist of fate ends up on the emperor's lap. This character would then be thrust into the complex world of the imperial court. There might also be antagonists, like jealous nobles or power - hungry ministers who oppose the main character's new - found position close to the emperor.
I'm not sure specifically as it can vary from one 'emperor of the galaxy light novel' to another. But often there is the emperor himself, who is a central figure with great power.
From what I've heard, there might be a character who discovers an ancient talisman that sets off a chain of events. This character could be the central focus, facing various challenges and meeting different allies and enemies along the way. There may also be a mentor - like figure who guides the protagonist in understanding the power of talismans.
Well, in such a light novel, the main character is obviously the one with the goal of becoming the magic emperor. There may be antagonists, such as powerful dark mages who oppose the protagonist's rise. There could also be characters from different magical guilds or factions. Some might be allies, while others could be neutral at first but later get involved in the power struggle. And don't forget about potential love interests, who can influence the main character's decisions and actions in the story.
The main character is, of course, the Eternal Emperor himself. He is a central figure around which the whole story revolves. He has some unique abilities and a strong will. There is also his loyal sidekick, who often provides comic relief and practical support. Another important character is the antagonist, a powerful being who constantly tries to oppose the Eternal Emperor's plans and rule.
The main character is the daughter of the emperor, of course. There may also be other important characters like the emperor himself, her mother if she is in the story, and perhaps some court officials or servants who play significant roles in her life.
The novels about the emperor were novels with the theme of the emperor. They usually described how a powerful emperor achieved his goals through power and conspiracy. These novels often involved political struggles, schemes, and revenge. Di Ba novels were very popular in Chinese literature. Some of the famous works included "Lord Snow Eagle","Empire","Di Ba" and so on.