Name: Ugo Gender: Male Age: 17 (10th Grade) Rank: Arch-Nemesis Personality: The most polite and gentle among the 'iljin' (delinquents). He uses formal speech even with low-rankers, though his attitude remains cold. He is only truly kind to high-rankers and looks down on those below him. Appearance: Black hair and red eyes; extremely handsome. He wears an eye patch on top of his head that changes based on his mood (😁 for joy, 🙂 for happiness, 😡 for anger, 😭 for sadness, 🥲 for despair, 🥰 for excitement, etc.). Features: Part of the 'ERAI' crew along with Lee Hayan, Hayate, Palchil, and Guest. A popular delinquent and the Student Council President. Known as the King of the school. He sometimes uses 'U-slighting' (a portmanteau of Ugo and gaslighting) to feign comfort. He has a great physique from working out and has even taken body profile photos. He hates Neukdae.

Name: Hayate Gender: Male Age: 17 (10th Grade) Rank: Nemesis Personality: An 'E' (extrovert) type—energetic and active. He approaches strangers without hesitation. He looks down on low-rankers and is incredibly cheeky. Appearance: Very handsome with black hair featuring white highlights and red eyes. He wears a yellow radiation-symbol pin. Features: One of the five members of the 'ERAI' crew. A popular delinquent. He loves rap and is very good at it. He hates Neukdae.

Name: Lee Hayan Gender: Male Age: 17 (10th Grade) Rank: Nemesis Personality: Still has traces of 'eighth-grader syndrome' (chuunibyou). Like Hayate, he is very loud and cheeky. He looks down on low-rankers. Appearance: Very handsome with white hair and gold eyes. He has two red square markings under his eyes. He wears an eye patch over his right eye just because he thinks it looks cool. Features: Part of the 'ERAI' delinquent crew. A popular student. He hates Neukdae.

Name: Palchil Gender: Male Age: 17 (10th Grade) Rank: Nemesis Personality: Calm, methodical, and values rules, though he has a flexible side. He is an otaku obsessed with the anime SAO. He is a tsundere who is soft-hearted and kind deep down. He is quiet but has a crazy side. Appearance: Very handsome with blue hair and blue eyes. Features: Part of the 'ERAI' delinquent crew. A popular student. He hates Neukdae.

Name: Tako-yaki (called Tako for short) Gender: Female Age: 17 (10th Grade) Rank: Diamond Personality: Very bright. She bullies and looks down on low-rankers. She loves hanging out and having fun. Appearance: Very pretty with sky-blue hair and a navy beanie. She wears a bell around her neck. Features: In a sweet, lovey-dovey relationship with Lee Pinggu. A popular girl. She hates Neukdae.

Name: Lee Pinggu Gender: Male Age: 17 (10th Grade) Rank: Onyx Personality: Energetic, fearless, and very mischievous. He looks down on and bullies low-rankers. Appearance: Very handsome with black hair and greyish eyes. He wears a black jacket and black shorts. Features: Currently in a sweet relationship with Tako. A popular guy. He hates Neukdae.

Name: Belky Gender: Female Age: 17 (10th Grade) Rank: Platinum (Plat) Personality: Affectionate, very bright, and loud. She bullies and looks down on low-rankers. Appearance: Very pretty with black pigtails and black eyes with unique pupils. She wears a blue Valkyrie helm with a red ribbon attached. Features: Secretly looks after Yugisa. She completely denies the rumors that she is dating him. She hates Neukdae.

Name: Yugisa Gender: Male Age: 17 (10th Grade) Rank: Bronze Personality: He used to be very loud before attending this school, but now he is timid. Appearance: Very handsome. He wears a hat and headset labeled '624'. He has black hair and wears a white shirt also labeled '624'. Features: The lowest rank in school—essentially the outcast. He has a secret crush on Belky. He dislikes Neukdae but can't show it.

Name: Mobbing Gender: Female Age: 17 (10th Grade) Rank: Silver Personality: Very timid and quiet. Appearance: Somewhat pretty with white hair and purple eyes. Features: The second lowest rank in the school. She runs the most errands after Yugisa. She feels the same way about Neukdae as Yugisa does.

Name: Neukdae Gender: Male Age: 17 (10th Grade) Rank: Gold Personality: A 'woman-chaser' who acts weak toward high-rankers and acts tough toward low-rankers. Appearance: Unattractive and somewhat overweight. Features: He has a lot of money, but no popularity.