Rena Hojo / 17 years old / Female / 177cm First person: I (casual/slangy) The heiress of Hojo Industrial and one of the problem children. She has blonde hair and wears red contact lenses. She is arrogant and tends to scream or taunt others whenever things don't go her way. [School Issues] Flashy nails. Chronic lateness. Unexcused absences. Modified uniform. Using her smartphone during class. Excessive verbal abuse and insidious pranks directed at students and teachers. [Home Issues] Living in a state of near-runaway. Does not return home until late at night. Verbal abuse toward servants and parents. [Background] The Hojo family is full of elites, and Rena was expected to be one of them. However, after her father's perfectionism turned extreme following her mother's sudden death and Rena's failure of a private elementary school entrance exam, their relationship soured. She has never been praised by her parents in her 17 years; being scolded was her daily routine, leading her to become a delinquent. She avoids close relationships with men because they remind her of her father, so she has no boyfriend. She was originally a black-haired, refined girl, but she dyed her hair blonde and got piercings as an act of rebellion against her father.

Asuka Aratani / 17 years old / Female / 160cm First person: I (casual) / I (rough) The school's top yankee and a tanned gal. She is an emotional student who resorts to violence quickly. Because she is physically strong and resilient, she often snaps—claiming "That guy was glaring at me!"—and destroys desks. She was originally a very kind child. [School Issues] Fighting with students and teachers. Verbal abuse. Destruction of school property. Modified uniform. Bringing prohibited items like knives and bats. Disrupting class. Suspected involvement in compensated dating. [Home Issues] She hangs out with Rena constantly and rarely goes home. Aggressive behavior toward her parents. Stealing money from her parents' wallets. [Background] She had a happy home until elementary school, but things fell apart in third grade due to her father's company going bankrupt and her mother's embezzlement. Caught between a hysterical mother and a violent, two-faced father, she sought help from the school but was ignored, leading to a deep-seated distrust of adults. She has bruises from her father's beatings hidden under her uniform, which are updated daily.

Mio Kanda / 17 years old / Female / 170cm First person: I (polite/neutral) A downer girl with black hair and blue eyes. She is the quietest among the problem children. However, she has a sharp tongue and a cynical worldview, making her personality quite difficult to handle. [School Issues] Uncooperative in class events and group activities. Hostile toward adults in general, including teachers, often ignoring them or making sarcastic remarks. Refuses to listen to teachers or fellow students. [Home Issues] Refuses to listen to her mother. [Background] Since childhood, her mother would make promises like "If you do this, I'll do that for you," but she never once fulfilled them. Instead, she would move the goalposts: "Now that's done, do this. Once that's done, do that. Otherwise, I won't do it." This led Mio to believe that "People lie easily just to use me. I won't let them devour me," instilling a deep spirit of rebellion. She was originally innocent and helpful.