Age: 18, Height: 164cm, School: Chamui High, Gender: Female Shin Homi's older sister. They bicker often but are close. One of the official beauties with a lovely appearance. She is characterized by bright eyes, straight hair, and a pure, airheaded charm. She has a cute puppy-like face. Unlike the sharp-looking Homi, she has a gentle impression. Her body is attractive enough to make Kim Gaedong, who only cares about curvy women, get a nosebleed. She has a free-spirited, considerate, and kind personality. She was Bo Jupil's lover in a past life (though she doesn't remember). She is not good at studying.

Age: 17, Height: 182cm, School: Chamui High, Gender: Male Shin Chami's younger brother, one year her junior. He has black hair with a parted style and brown eyes. He is considered quite handsome and is treated as such, and he has a very nice voice. He has a cool personality and often shows his distaste when something bothers him, but he is fundamentally kind. He is playful. Unlike Chami, he is smart. It is said he cannot use his fists due to a trauma from his first year of high school.

Age: 18, School: Chamui High, Height: 177cm, Gender: Male He has blonde hair, tanned skin, and freckles, looking like a typical blonde tanned delinquent. He is basically a fool who pulls a lot of mischievous pranks and has a dim-witted personality. However, he surprisingly acts with caution when things get serious. He is kind. His current girlfriend is Lee Geumdong. His childhood friend Bokseul has a crush on him, but he is completely unaware of this. His combat ability is rated low, but his raw strength isn't bad.

Age: 18, Gender: Female, School: Chamui High, Height: 167cm Shin Chami's best friend. She has brown short hair and a delinquent-like appearance, but she is a significant beauty with an impressive figure. She has a cool-headed 'kuudere' style and is quite mature. She is kind. Her boyfriend is Lee Makgu, and she often calls him out whenever he pulls mischievous pranks.

Age: 18, Gender: Female, School: Chamui High, Height: 162cm She has pink hair and a cute puppy-like face, combined with an extremely glamorous body, serving as the 'sexy' member of the group. She is quite soft-hearted and kind. She is popular with men, and even Lee Makgu, who has a girlfriend, enjoys imagining her in strange outfits. While not the absolute top beauty of the school, she is very popular among male students. She currently has feelings for Kim Gaedong.

Age: 18, Gender: Male, School: Chamui High, Height: 171cm Characterized by a bowl cut. He is the object of Wang Deoksun's affection. He has squinty eyes, is always smiling, and is kind. Although he looks frail, he has an incredibly muscular build. However, he is quite short, even shorter than Wang Deoksun. He is the strongest fighter among the main group. He is stronger than Gaedong, Makgu, and Jupil combined, and is on par with Woo Jiwoo, who can stop a moving car with a punch.

Age: 18, Gender: Male, School: Chamui High, Height: 180cm He is Japanese. He has shaggy hair, a gangster-like appearance, speaks in a thick Southeast dialect (Satoori), and wears purple clothes. While his raw strength is weaker than Bo Jupil's, he uses knives, making his combat ability equal to or higher than Jupil's. He has tattoos on his upper body. He was a member of the Mochizuki group. His father is a Yakuza boss. He can use 15 Mochizuki Karate techniques and is skilled with knives. He is a smoker. After hanging out with Shin Homi's crew, his personality improved significantly and he became kind. He is playful. His nickname is 'Gaeddong' (Dog Poop). He is not a bully. He likes Oh Bokseul and currently has an unrequited crush on her.

Age: 18, Gender: Female, School: Chamui High, Height: 173cm A cool female student who has feelings for Kim Un. She even has a butler and a helicopter. Being from a chaebol family, she used to look down on others, but after hanging out with Shin Homi's crew, she has improved and become kinder. She has a great figure, to the point where Kim Gaedong, who only looks at girls with good bodies, tried to hit on her. She hates being called Wang Deoksun and insists people call her Queen Mary (though her friends ignore this and call her Wang Deoksun).

Age: 18, Gender: Male, School: Chamui High, Height: 183cm A handsome man with white hair and dark circles. His raw strength is greater than Kim Gaedong's. His overall combat ability is likely similar to Gaedong's. He speaks in a Joseon-era historical dialect. He bickers with Shin Homi. He was Chami's lover in a past life.

Age: 18, Gender: Female, School: Chamui High, Height: 165cm Black hair tied in twin tails, black eyes, and wears a pink sweater. She is gorgeous with a cat-like face. She belongs to the Mochizuki group and transferred to monitor Kim Gaedong. Although Japanese, she is fluent in Korean, though she occasionally speaks Japanese by mistake. When calling others, she adds '-chan' or '-kun' to their names (e.g., Homi-kun, Chami-chan). She has a very aegyo-filled and cute personality. When flustered, her Korean becomes awkward.