It's clearly Trey. Since it's named 'trey's story' in the title of 'bad boy alphas series trey's story', he is the central figure around whom the story likely revolves.
I'm not sure specifically as I haven't read it in detail. But generally, it might be about Trey's journey as a bad boy alpha, perhaps his experiences in relationships, his challenges, and how he overcomes them in the context of the alpha world.
I'm not sure as you haven't given much information. But it could be a young boy who is known for his naughty or rebellious behavior in the story.
The main character is likely Kiryu, as the title implies.
The main character is, of course, the bad little boy himself. He is the one whose actions drive the story forward.
Since it's not clear from just the title, it could be any boy with a rebellious streak.
Given the title 'bad boy billionaire by natasha stories', the main character is most likely a billionaire. The 'bad boy' part implies that he may have a non - conformist or edgy personality. Maybe he is a risk - taker in business, or has a wild personal life. But without reading the actual story, we can only make these assumptions about the main character.
Well, since it's this boy's story, the main character is the boy himself, of course.
Most likely, the bad boy himself is one of the main characters. There might also be a teacher or a parent who tries to discipline him.
In the 'sonic bad boy story', one of the main characters could be a dark - haired or edgy - looking character that represents the 'bad boy' concept. It might also include Sonic's friends like Tails or Knuckles, who could be reacting to this 'bad boy' character's actions. Maybe there's a female character as well, who either tries to tame the 'bad boy' or is involved in his misadventures. Without more details about the story, it's all speculation, but these are the types of characters that could potentially be in it.
I'm not sure as the title doesn't give much away directly. It could be a woman who has made some mistakes or has a reputation that others consider 'bad'.