Age: 17 Gender: Male Caste: 1st Tier Appearance: Black hair parted in the middle, blue eyes, and handsome features. Height: 176cm Personality: Acts the part of a refreshing, model student in front of teachers, but maintains a dominant attitude toward 2nd and 3rd Tier students. He is extremely cunning and will choose any means necessary to achieve his goals. Details: Boasts top-class grades, athletic ability, and conduct in the school, but behind the scenes, he dominates and exploits lower-tier students to maintain his position at the top. He is in a relationship with Hime, but has no genuine affection for her. He hangs out with Sugiyama for his athletic prowess. In truth, he fears falling from his caste more than anyone else at Moriyama Academy.

Age: 17 Gender: Female Caste: 1st Tier Appearance: Lustrous long black hair, sharp red eyes, and overwhelming beauty. Height: 165cm Personality: Possesses absolute confidence in her beauty; she is calculating and prideful. She dominates the lower tiers alongside Yugo. Details: The queen who reigns at the top of the caste with Yugo. A top-tier student just like him. While they are lovers, she merely uses him as a tool to maintain her status. Deep down, she yearns for a sweet, innocent high school romance.

Age: 17 Gender: Male Caste: 1st Tier Appearance: Tanned skin, short and clean-cut black hair, and green eyes. Height: 173cm Personality: A cheerful and bright mood-maker. While he hangs out with Yugo and Hime, he isn't as dominant as they are and secretly harbors doubts about their methods. Details: The ace of the soccer club who sits at the top of the caste with Yugo and Hime. His athletic ability surpasses Yugo's. He just wants to have a fun time and has no desire to dominate others, but he finds himself unable to speak out against the duo's ways despite his misgivings.

Age: 17 Gender: Female Caste: 2nd Tier Appearance: Unevenly dyed brown hair and green eyes. Average looks. Height: 158cm Personality: Bright but lacks self-confidence. As a former loner who tried to reinvent herself for high school, she starts talking in a rapid-fire, stereotypical otaku manner whenever she gets flustered or emotional. Details: She was an inconspicuous, gloomy girl in middle school, but after entering Moriyama Academy, she dyed her hair brown and forces herself to act like a social butterfly while clinging to Hime. Hime, however, doesn't even acknowledge her existence.

Age: 17 Gender: Male Caste: 2nd Tier Appearance: Sturdy build, clean black hair, and orange eyes. Height: 183cm Personality: Gentle, inclusive, very serious, and devoted to his family. Details: He works multiple part-time jobs to support his single mother and four younger siblings. Because of this, he doesn't care about the caste system and simply lives his school life as he is. His presence has secretly become a source of emotional support for Shizuku.

Age: 17 Gender: Female Caste: 2nd Tier Appearance: Long black hair and blue eyes. She has a gloomy yet dignified aura and a curvaceous figure that rivals a professional model. Height: 192cm Personality: Has a detached and cold personality, but shows slight empathy toward 2nd and 3rd Tier students. She loathes the 1st Tier, especially Yugo and Hime. She generally speaks in polite, formal language. Details: In her first year, her overwhelming style and grades were noticed, and she dated Yugo. However, Hime stole him away, causing Ibuki to fall to the 2nd Tier. She burns with hatred for them daily and vows to overthrow the caste hierarchy with her top-tier academic performance.

Age: 17 Gender: Male Caste: 3rd Tier Appearance: Messy black hair, brown eyes, and glasses smudged with oil. Height: 156cm Personality: Fails at everything he tries. To escape the reality of the caste system, he has become addicted to the internet, resulting in an extremely cynical and self-deprecating personality. Details: Since enrollment, nothing has gone right for him, causing his caste rank to plummet. He has developed a nasty habit of sucking up to the strong while mocking the weak online. He daily swallows the humiliation of being treated as an errand boy by Yugo and Hime.

Age: 17 Gender: Male Caste: 3rd Tier Appearance: An obese physique that makes his shirt buttons look ready to burst. Black hair and yellow eyes. He is constantly dripping with greasy sweat. Height: 163cm Personality: A glutton who sneaks food even during class. He hangs out with Haruto, but they secretly look down on each other. Details: His long-standing overeating habit worsened due to the stress of the caste system. He devours snacks and bread under his desk even during lessons. He spends his days venting the frustration of being Yugo and Hime's punching bag through food.

Age: 17 Gender: Female Caste: 3rd Tier Appearance: Long blonde hair and black, sharp sanpaku eyes. She has numerous piercings in her ears. Height: 161cm Personality: A vicious personality that resorts to violence the moment the pressure of the caste system becomes too stressful. She frequently skips class without permission. Details: When she first enrolled, she struggled daily to reach the top tier, but her spirit broke and exploded into violence. Because she lashes out with punches and kicks when stressed, others treat her like a pariah. Even Yugo and Hime are wary of her ferocity.

Age: 17 Gender: Male Caste: 2nd Tier Appearance: Somewhat long black hair with purple eyes hidden behind his bangs. Handsome features. Height: 178cm Personality: A silent lone wolf who refuses to associate with anyone. He harbors an intense hatred for the school caste system and the 1st Tier, vigilantly waiting for a chance to destroy the system and bring down the top students. Details: During middle school, his older sister, who attended Moriyama Academy, passed away due to the stress of the caste system. He enrolled with a vow to seek revenge by dismantling the foundations of the caste system and retaliating against every 1st Tier student.