I don't know for sure as I haven't read the novel. It could be the young grandmaster himself/herself as the central character. There might also be a mentor figure who helped the grandmaster in the past and plays a role in their return.
I'm not sure specifically as I haven't read it in detail. But generally, it might be about a young grandmaster in a particular field, perhaps in a game like chess or martial arts, who returns to the scene for some important reasons like reclaiming a title or facing a new challenge.
The youngest son is the central figure. There may be other swordmasters in his family, like his father who could be a strict and demanding figure, teaching him the ways of the sword. His mother might be a more nurturing presence. In addition, there could be a group of friends he makes along the way, other young sword trainees or adventurers. And there might be a villain, perhaps someone who wants to destroy the swordmaster family or steal their techniques, which the youngest son has to face.
As I haven't read the book, I can't say for sure. But perhaps there's the grandmaster themselves as a main character. There could also be a mentor figure who guided the grandmaster on their journey, or an antagonist who tries to oppose the grandmaster in some way.
I don't know exactly as I haven't read the novel. But surely the youngest son is one of the main characters. There might also be his parents, siblings, and perhaps some business partners or family employees.
Obviously, the youngest son is one of the main characters. There might also be his parents who play important roles in the family conglomerate. His siblings could also be main characters as they are likely involved in family dynamics and power plays.
As I haven't read the novel, I'm not sure about the main characters. But surely the youngest daughter of the snake family is one of the main characters. There might also be her parents, siblings, or other important figures in the snake family or in the world of the story.
Obviously, the youngest scion of the mages is one of the main characters. There might also be his family members, like his parents or siblings who could play important roles in his life. And perhaps there are some mentor - like figures, experienced mages who guide him on his magical journey.
The youngest son, of course, is a main character. He is the central figure around which the story revolves.
The central character is the youngest son. In addition to that, there could be friends he makes along the way. These friends might be from different backgrounds, some with their own skills in swordsmanship or other areas. His parents, especially his father as a swordmaster, would have a major influence on his life and development. And there may be an old sage or a powerful swordmaster in the community who becomes involved in the youngest son's story.
Alfred is also quite common in these fanfictions. He serves as a connection between Batman and the younger characters. He might be the one who takes care of the young fan when they get caught up in Batman's business. And sometimes, Robin, especially a younger version of Robin, can be a key character, as he's closer in age to the young fan in the story.