Lena is surely one of the main characters. There might be her best friends, perhaps named something like Sarah and Tom. And of course, there could be a love interest, like a boy named Jack.
Since it's Lena's high school story, Lena is the central figure. Alongside her, there may be some teachers who play important roles, like Mr. Smith who is a strict but fair math teacher, and Ms. Johnson who encourages Lena's creativity in the art class. Also, there could be a group of students who are either friends or rivals to Lena, such as the popular clique led by a girl named Brittany.
Lena is the protagonist. In addition to her, there may be her family members who influence her high school life in some ways. For example, her older sister who gives her advice on dealing with high school drama. Then there could be a group of misfit students that Lena befriends, and together they create their own unique sub - culture within the high school, like a group of students interested in a particular type of music or a social cause.
There could be a new student who has just transferred to the high school. This character is usually the one through which we get to discover the different aspects of the school, like the different cliques and the school's traditions. And then there may be a teacher who plays an important role in guiding the students, not just academically but also in their personal growth.
There's often the popular kid. This person is usually good - looking, well - liked, and involved in many school activities.
I'm not entirely sure, but there are likely to be some cool monster characters like Draculaura, a vampire. She's usually a popular character in the Monster High universe.
Given the lack of information, the main characters in 'nai high school story' could be a diverse bunch. There could be a student who is new to the school and has to adapt to the environment. There might also be a group of friends who have been together since they were freshmen and they experience all sorts of things together, like winning a big school event or facing a crisis that tests their friendship.
Maybe the main characters in Jadoo High School Story include the teachers as well. There could be a really strict teacher who everyone is a bit afraid of, and a young and cool teacher who the students can easily relate to. And among the students, there could be a student leader who is trying to make positive changes in the school, and a rebel who is always challenging the rules.
There might be the popular jock who is good at sports and always in the spotlight during games.
Perhaps there is a skater girl who is really good and challenges the boys. And also a nerdy friend who helps the skaters with their schoolwork.
Well, given that it's 'Mia High School Story', Mia is the central character. There could be her teachers, like Mr. Smith who is strict but fair and helps Mia in her studies. There might also be a group of friends, for instance, Tom, a funny guy who always makes everyone laugh, and Sarah, a smart girl who often studies with Mia. These characters together could form the main cast that drives the story forward.
Since I don't know the specific 'Actor High School Story', I can't say for sure. But it might have characters like the star - actor - to - be, a talented but shy student who slowly comes out of their shell. There could also be a rival actor, a popular kid who's used to getting all the lead roles.
Without more information about 'cp high school story', it's hard to name the main characters. However, it might have characters like a class president who is trying to make positive changes in the school, a shy student who gradually comes out of their shell, and a group of friends who are always together through thick and thin.