The main characters are most likely the 'akuyaku reijou' and the 'last boss'. The 'akuyaku reijou' is probably a female character who is initially seen in a negative light, but as the story progresses, she may show different sides of her personality. The 'last boss' is a key figure, perhaps a powerful and mysterious character. There could be other characters around them like servants of the 'akuyaku reijou' who have their own agendas, or other nobles in the story's world who interact with the two main characters and influence the plot in various ways.
I'm sorry I don't know for sure as I haven't read it. But likely there's the akuyaku reijou (villainess) herself as a main character, and probably the last boss character would also be a major figure in the story.
I'm not sure specifically as I haven't read it in detail. But generally, it might be about a villainess - type character and her relationship with the so - called 'last boss' in the story.
It's mainly about the story of the villainess. Usually in such light novels, there are unique settings and character developments. Maybe it involves the journey of the so - called 'villainess' character, her interactions with other characters, and how she deals with the plot - related challenges in the story.
Since I haven't read the novel, I can't say for sure. But it's likely to have the villainess herself as one of the main characters.
I'm not entirely sure as I haven't read it specifically. But generally, 'akuyaku reijou' often refers to the villainess in Japanese light novels. It might be about the story of a villainess's exile or her life after being banished.
The protagonist is often a key figure. In 'the last boss novel', there's this character who has some extraordinary abilities that set them apart. But there are also side characters like the mentor - type figure who guides the protagonist at crucial moments.
I'm sorry, I'm not very familiar with this specific novel. It might be a relatively niche or Japanese - origin novel. Maybe you can try to search for it on some specialized novel platforms or Japanese literature communities for more detailed information.
I'm not entirely sure as I haven't read it specifically. But generally, a 'akuyaku reijou' (villainess) novel often involves a female character who is initially seen as a villain in a story setting, perhaps in a world of nobles or some sort of fantasy realm. It might focus on her journey, whether it's trying to change her 'villain' status, or dealing with the world around her in a different way.
Without having read the 'yasei no last boss novel', it's difficult to name the exact main characters. However, in such a story, there might be a protagonist who is on a quest related to the last boss. There could also be side characters like friends or mentors of the protagonist. The last boss itself is also a key character, and there may be some characters that are part of the last boss's backstory, like former allies or enemies that shaped who the last boss has become.
You could start by looking on some popular Japanese novel translation websites. Some well - known e - book platforms might also have it if it has been translated into other languages.