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.
Another possible main character could be a young apprentice or a peasant who gets involved with the emperor and the sword in an unexpected way. This character could bring a different perspective to the story and might grow throughout the novel, becoming an important figure in the events related to the emperor and his sword.
I'm not entirely sure without reading it fully, but there's likely to be the emperor who has some connection to the sword, perhaps as its owner or the one it's named after. There may also be a hero or heroine on a quest related to the sword.
Since I don't know the exact 'Sword Emperor Novel', it's hard to say. But it's likely that the Sword Emperor himself is a main character. There may also be his friends or allies, and his enemies who play important roles.
Since I don't know the specific content of the novel, it's hard to say for sure. But surely the Sword Emperor himself is one of the main characters. There may also be his mentors or trainers who played a role in his development.
Since it's the 'Sword of the Emperor Novel', the main characters might include the emperor who has some connection to the sword, perhaps a young and inexperienced one who has to learn how to handle the power that comes with the sword. There could also be a loyal general who is sworn to protect the emperor and the sword. Another possible main character could be a mysterious figure from a far - off land who has come to seek the sword for his own reasons, whether it be for good or evil.
The main character is likely the Sword Emperor. This character is likely to be at the center of the story's action. He or she would be involved in battles, face political intrigue, and have relationships with other characters. In light novels, the main character often has some special abilities or a unique backstory, and as the Sword Emperor, this character would presumably be highly skilled in swordsmanship and hold a position of great power within the story's world.
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.
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.
Typically, the main character is the emperor himself. He could be a young and inexperienced one at the start, like in 'The Novice Emperor's Journey' where the emperor has to learn how to rule while facing various threats.
The main characters include Kirito, who is highly proficient in combat within the Sword Art Online game. His skills and determination make him a key figure. Asuna, on the other hand, is not only a capable fighter but also represents the emotional core in many story arcs, especially in her relationship with Kirito. Other characters like Sinon, who has her own backstory and role in the overall narrative, also contribute to the rich tapestry of the Sword Art Light Novel's story.
The sword, which is the reincarnated entity, is a major character. It has its own personality and goals. The girl who teams up with the sword is also very important. She has her own backstory and abilities, and together they face the challenges in the story. There may also be some other side characters who play important roles in their adventures, like the various monsters or other adventurers they encounter.