Most likely, the brother and his best friend are central to the story. The brother is important as he is the link to the best friend. The best friend, on the other hand, might bring in his own set of characteristics, like being adventurous or really smart. And the narrator, who could be the brother's sibling, would be the one observing and telling the story, which would also make them a key character in a way.
In this novel, the obvious main characters are the protagonist who is betrothed to her brother's best friend. The brother's best friend himself is a key character. He might be portrayed as a complex figure, with his own personality traits and motives. The brother is another main character. He may have his own relationship with both his sister and his best friend, and his actions and decisions could greatly impact the relationship between the betrothed couple. Additionally, there could be secondary characters such as the family members of the betrothed couple, who could add more context and drama to the story through their expectations and reactions.
The main characters are, of course, the girl who is forced to marry and her brother's best friend. There might also be the brother who could play an important role in the story, either by being the one who initially forces the marriage or by later trying to help them work things out. Other possible main characters could be rivals or friends who influence the relationship between the two main characters.
I don't know exactly as I haven't read it. But surely the main character is the person who has a relationship with his best friend and the best friend's girl. And of course, the best friend and his girl are also likely to be main characters.
Since I haven't read it, I can only guess. Obviously, the dad and his best friend would be main characters. And probably the narrator who is telling the story about them.
I'm not sure exactly who the main characters are without reading the novel. But I would assume that the best friend in need of exorcism is a key character. And the one who is determined to save their friend, perhaps a strong - willed person with a deep bond to the possessed friend, is also a main character. There might also be other characters like a priest or an expert in the occult who helps with the exorcism.
I don't have information about this novel, so I can't tell who the main characters are.
The dad is a key main character. He might be the stable force in the family but with a complex backstory involving his best friend. The best friend himself would be an important character, with his own personality traits and motives. And then there is the protagonist, which could be the son or daughter. They are the ones who will drive the story forward as they explore the relationship between their dad and his best friend, and deal with their own feelings about it.
Well, the brother is definitely a main character in a way, even if the focus is more on the relationship between the narrator and the best friend. The best friend himself is a central figure. And there could be a character like an old mentor or a childhood acquaintance that pops up and has an impact on the relationship between the two main characters.
There was a novel called " My Best Friend's Brother ", and the author was just like that. This novel described the relationship between a female protagonist and her best friend's younger brother. However, the other search results did not mention any similar novel recommendations. Therefore, I don't know if there are other good friends who would like my brother's novel recommendations.
Since I don't know the exact novel, it's hard to say for sure. But likely, the main character would be the person working for their dad's best friend. And of course, the dad and his best friend would also be important characters.