Since the title is 'cause you're my boy', one main character is likely the 'boy'. There could be another character, perhaps an older person like a father figure or an older friend who has this strong feeling towards the boy. Maybe there's also a character who causes some sort of conflict in their relationship, like a rival or someone with different values.
I don't know the specific main characters since I haven't read the novel. But it could be the 'boy' mentioned in the title and someone who has a special connection to him.
I'm not sure as I haven't read it specifically, but it might be about friendship or a special bond between the characters given the title.
The title 'cause you re my boy' might suggest that it's centered around a relationship between two characters, perhaps a romantic or a very close platonic one. It could also touch on themes like loyalty, growing up together, and the special bond that exists between the two. For example, it might tell the story of how they support each other through different life events, and how their relationship evolves over time.
As I haven't read the 'cause you're the only one 3 fanfic', it's impossible to determine the main characters. It could be characters from an existing franchise that the fanfic is based on, or it could be entirely original characters created by the author for this specific fan - made story.
I'm sorry, I haven't read this Thai novel specifically, so I can't directly recommend reviews. But you can try searching on some international book review platforms like Goodreads.
Perhaps there is a male and a female lead. The male lead could be a person who has been searching for true love for a long time and finally finds it in the female lead. Or it could be two characters who have known each other for a while but only now realize their love is unique and the only one that matters at this time.
Obviously, Harry Potter would be the main character since the title centers around him. His friends like Ron and Hermione are also likely to be main characters as they often interact with Harry and are part of his adventures. They might be either trying to stop Harry from being too naughty or getting involved in his naughty antics.
From the title, we can assume that the two main characters are the 'bad boy' who is the bully and the person who is being bullied. But without reading the novel, we can't know more about their personalities, backgrounds or any other characters that might be important in the story.
The main characters in 'while you're in love novel' remain a mystery to me without having read it. But typically, in a love novel, you'll have the protagonists who are falling in love. They could be young, perhaps in their twenties or thirties, trying to navigate the complex world of relationships. There may also be an antagonist, someone who tries to create obstacles in their love, like an old flame of one of the main characters or a person with a vendetta against their relationship.
I don't know as I haven't read it. It could be a male and a female lead who are at the center of a romantic plot.
There could be a diverse set of main characters. Maybe there's a young girl who is the first to receive the invitation and she drags her friends along. One of her friends could be a bookworm who tries to rationalize the strange events using knowledge from horror books he has read. Another could be a joker type who initially makes light of the situation but then gets really scared as things start to get serious. These characters would then drive the plot forward as they navigate the creepover in the graphic novel.