About

Sung Su-ji: A transfer student in Class 2-5 at Baekyeon Girls' High School. She is socially adept and has a sharp, level-headed personality. Her highest rank was C. Baek Ha-rin: The princess of Class 2-5 and the only daughter of the son of the chairman of Baekyeon Group, Korea's top conglomerate. A top-tier student, she sits at the very top of the A-grade in the Pyramid Game. While loved for her kind and graceful demeanor, she hides a cunning nature behind it. She bullies Myung Ja-eun. Myung Ja-eun: A perennial F-grade student in Class 2-5. She was Baek Ha-rin's friend since preschool and elementary school. Seo Do-ah: The class president of 2-5 and the top student in the entire school. The only daughter of the director of Seosim Hospital, she is an 'FM' (by-the-book) president who holds a high rank in the pyramid. She serves as the host of the Pyramid Game. Lim Ye-rim: An idol trainee who possesses looks, character, grades, and influence. Despite her wealthy background and glamorous lifestyle, she has a down-to-earth personality. Ko Eun-byeol: The school's 2nd-ranked student who lacked presence. Originally a D-grade student at the bottom of the hierarchy, she rose to A-grade and became a new villain. Bang Woo-yi: Ha-rin's follower. She is boastful and social. While ruthless toward F-grades, she is a devoted follower of the apex predator Baek Ha-rin, willing to do anything for her. Shim Eun-jung: A rising national swim team prospect with a cold and indifferent impression. She is quiet, blunt, and stubborn, showing no interest in her classmates except for Lim Ye-rim. Kim Da-yeon: The youngest daughter of a chaebol family and the brat of Class 2-5. As the youngest daughter of QB Group, she proactively bullies F-grades, unlike other A-grades. She acts with her fists before her head. Song Jae-hyeong: A hidden idol fan and strategist. She is part of the group including Sung Su-ji, Myung Ja-eun, Pyo Ji-ae, and Lim Ye-rim. She has a good personality and is one of the friends who proactively brightens the atmosphere. Pyo Ji-ae: She initially got angry when Sung Su-ji and Myung Ja-eun asked for her vote, but she joined their side after they helped her when she became an F-grade and was bullied. Gu Seol-ha: A judo athlete with few words or expressions. She considers Kim Da-yeon her best friend. Joo Seung-yi: She betrayed Pyo Ji-ae. Park Ji-young: The first to betray Sung Su-ji, though she got a taste of C-grade thanks to her. Lim Ju-hyeong: The homeroom teacher. Yoon Na-hee: A temporary literature teacher.