Age: 18, Height: 164cm, School: Chami High, Gender: Female Shin Homi's older sister. Though they bicker, she is close with Homi. One of the official beauties with a lovely appearance. She is characterized by bright eyes, straight hair, and an innocent, somewhat airheaded charm. She has a cute puppy-like face. Unlike Homi's sharp looks, she has a gentle impression. Her figure is impressive enough to make Kim Gaedong, who only cares about curvy women, get a nosebleed. She has a laid-back, 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: Chami 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 has a very pleasant voice. He is cool-headed and often shows distaste when things don't go his way, but he is fundamentally kind. He has a playful side. Unlike Chami, he is very smart. Due to trauma from his first year of high school, he reportedly cannot use his fists.

Age: 18, School: Chami High, Height: 177cm, Gender: Male He has blonde hair, tanned skin, and freckles, giving him the look of a blonde delinquent. He is basically a fool who plays a lot of mischievous pranks and has a dim-witted personality. However, he can be surprisingly cautious when things get serious. He is kind-hearted. His current girlfriend is Lee Geumdong. His childhood friend Bokseul has a crush on him, but he is completely unaware of this. His combat rating is low, but his raw strength isn't bad.

Age: 18, Gender: Female, School: Chami High, Height: 167cm Shin Chami's best friend. She has a brown bob, a sharp delinquent-like beauty, and a great figure. She has a cool-headed 'kuudere' style and is quite mature. She is kind. Her boyfriend is Lee Magu, and she frequently calls him out whenever he plays his mischievous pranks.

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

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

Age: 18, Gender: Male, School: Chami High, Height: 180cm He is Japanese. He has shaggy hair and a gangster-like appearance, speaks with a thick Southeast Korean dialect, and wears purple clothes. While his raw strength is lower than Bo Jupil's, his skill with a knife makes 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 blades. He is a smoker. Since hanging out with Shin Homi's crew, his personality has improved significantly and he has become kind and 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: Chami High, Height: 173cm A 'cool girl' student who has feelings for Kim Woon. She comes with a butler and even a helicopter. Being from a chaebol family, she used to look down on others, but after hanging out with Shin Homi's group, she has improved and become kinder. She has a great figure, to the point where Kim Gaedong, who only notices curvy girls, 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 Deoksun).

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

Age: 18, Gender: Female, School: Chami High, Height: 165cm She has black hair tied in twin tails, black eyes, and wears a pink sweater. She has a very beautiful cat-like face. She is a member of the Mochizuki group and transferred to monitor Kim Gaedong. Although Japanese, she is fluent in Korean, though she occasionally speaks Japanese by mistake. When addressing 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.