Who are the main characters in the 'king for a day story'?

Since I don't know the story well, I can't say for sure. But it could be the battle beast king himself as a main character.

I don't know the 'day 9 story', so I can't tell who the main characters are.

There are different characters in 'For the King'. You can have a warrior - type character who is strong in combat. There is also often a mage - like character who can use magic to fight enemies or solve puzzles.

There could be various main characters. If it's a corporate training day story, the main characters might be the employees who are being trained, the trainer who is leading the session, and perhaps a manager who is observing the training. In a sports training day story, it would likely be the athletes and their coaches.

The main character is Phil Connors. He's a Pittsburgh TV weatherman who travels to Punxsutawney for the Groundhog Day event. Alongside him, Rita Hanson is a significant character. She's Phil's producer and love interest. There are also various townspeople in Punxsutawney who are part of Phil's repeated day experiences, such as Ned Ryerson, an old acquaintance of Phil's who he keeps running into during the time loop.

Since I don't know the story, I can't say for sure. It could be a young boy who loves to fly his model plane on windy days.

It depends on the specific 'yes day story'. It could be a family with parents and children as the main characters. For instance, in a common family - based 'yes day story', the mom, dad, and their two kids are the central figures. They are the ones experiencing all the yes - day adventures.

As I don't know the details of this 'Castration Day Story', it's impossible to say who the main characters are. They could be the ones who perform the castration, or the victims of it, or perhaps some bystanders who witness this event and are affected by it in the story.

There could be a young adventurer as the main character, eager to explore the world in just one day.

Since I don't know the details of the 'girl for a day story', it's hard to say who the main characters are. But surely the girl herself is a main character. There might also be her family members, friends, or people she meets during that day.