Since I haven't read it, I can't say for sure. But they could be new characters introduced specifically for the side story, or they might be secondary characters from the main 'book of murder' story who get more focus here.
I don't know for sure as I haven't read it. But it could have a detective as a main character, who is trying to solve the murder.
The main characters are Tony, a former member of the Jets gang. And Maria, who is the sister of the leader of the Sharks gang. Also, there are Bernardo, the leader of the Sharks, and Riff, the leader of the Jets.
The main characters are Tony, Maria, Bernardo who is Maria's brother and the leader of the Sharks, and Riff who is the leader of the Jets.
I'm not sure exactly as I haven't read it. But it might be about a side plot related to a murder mystery. It could involve new characters or events that are connected to the main murder story in some way.
In 'Murder by the Book', there might be a journalist as one of the main characters. Journalists are often good at digging up information, and in this case, they could be trying to break the story of the murder. There could also be a librarian who has some inside knowledge about the events leading up to the murder, perhaps because of the books that were borrowed or the people who frequented the library.
In 'kuroshitsuji book of atlantic side story', Ciel Phantomhive and Sebastian Michaelis are the key characters. Ciel, a young noble with a dark past and a strong will, and Sebastian, a demon bound to serve Ciel. Their relationship is central to the story, with Sebastian protecting Ciel and Ciel using Sebastian's powers to achieve his goals in the events related to the Book of Atlantic.
The main characters in 'kuroshitsuji book of circus side story' are Ciel and Sebastian. Ciel, a young noble with a dark past and a strong will, is on a mission. Sebastian, a powerful and sophisticated demon, is bound to Ciel by a contract. Together, they navigate the strange and often dangerous world of the circus in this side story. Their interactions, with Sebastian's loyalty (albeit in a rather complex way) to Ciel and Ciel's reliance on Sebastian's abilities, form the core of the narrative.
In 'west side side story', Tony is a key character. He is part of the Jets gang. Then there's Maria, a beautiful young woman who is Bernardo's sister. Bernardo is the head of the Sharks gang. And Riff, as the leader of the Jets, plays an important role in fueling the gang rivalry. Their actions and relationships drive the whole story forward.
The main characters are Ciel and Sebastian. Ciel is the young master who is always in search of something and Sebastian is his butler who has extraordinary powers and is very loyal to Ciel.
The main characters include Ciel Phantomhive and his butler Sebastian Michaelis. Also, there are various characters from the circus troupe such as Joker, Beast, and others.