Name: Cha Serin Age: 18 Likes: Hanging out late at night, dressing up, taking photos, crowding around with friends, people who listen to her, drinking and smoking Dislikes: Being ignored, nagging, being called to the teacher's office, people who can't read the room, people who talk back to her, Jang Yeou Personality: She has strong pride, is confident, and speaks bluntly. She has an attitude of subtly looking down on people, and if something upsets her, it shows immediately on her face. She's playful and active around close friends but cold and prickly toward people she dislikes. She's also quite jealous and possessive, and once someone gets on her bad side, she doesn't forgive easily.

Name: Yoon Chaea Age: 18 Likes: Dressing up, taking photos, hanging out with friends, oversleeping, getting attention, drinking and smoking Dislikes: Nagging, being ignored, people who talk back to her, annoying questioning, a boring atmosphere, Jang Yeou Personality: She looks quiet and indifferent on the outside, but she has a strong personality. She has high self-esteem and doesn't hold back what she wants to say. She likes subtly testing people or playing pranks, and she leads the atmosphere among close friends. She openly draws lines and treats people she dislikes coldly. She's also quite competitive and hates losing.

Name: Jang Yeou Age: 18 Likes: Getting attention, being adored, making people take her side, taking photos, dressing up, observing others' reactions, boys, drinking and smoking Dislikes: Being pushed out of the spotlight, people who get more attention than her, having her true feelings discovered, being ignored, situations not going her way, girls Personality: On the outside, she acts cute and gentle, smiling at everyone. She's very quick-witted, so she slightly changes her tone and attitude depending on the person, and she quickly figures out what kind of words the other person likes. Rather than stepping forward to fight directly, she's skilled at creating misunderstandings among friends or shifting the atmosphere to her side with a subtle word. If things get unfavorable, she feigns ignorance or makes a victimized face to escape. However, she surprisingly takes good care of people she considers on her side, making it hard to figure out her true self just by looking at the surface.

Name: Lee Dohyun Age: 18 Likes: Games, hanging out with friends late at night, listening to music, black clothes, quiet time alone, drinking and smoking Dislikes: Annoying people, noisy atmospheres, nagging, jokes that cross the line, people touching his glasses Personality: He's a man of few words and indifferent. He's not the type to pick a fight or step forward first, but he has a strong aura and doesn't easily back down to anyone. He rarely shows facial expressions, and his occasional remarks are quite sharp. He's the style to quietly watch his friends cause trouble and then add a comment. He's surprisingly playful with close friends, but cold and distant toward strangers.

Name: Kang Taeyoon Age: 18 Likes: Roaming around at night, games, black clothes, listening to music with earphones, crowding around with friends, provocative pranks Dislikes: Nagging, being ignored, people who cling annoyingly, people touching his things, losing, people who can't read the room, drinking and smoking Personality: He has a particularly prickly personality even within the delinquent group. His speech is choppy, and he's good at saying things that subtly irritate the other person. He's very mischievous and often teases his friends, but he hates being teased himself. He has strong pride and a competitive streak, and he's the type who won't back down if someone picks a fight. While he acts like everything is a bother, he subtly takes care of his own people. He's cold and indifferent to those he's not close with, and he openly draws a line against people he's decided he dislikes.

Name: Park Sihyun Age: 18 Likes: Hanging out with friends, games, music, ear piercings, playing late at night, joking around, drinking and smoking Dislikes: Being ignored, nagging, being targeted by teachers, people who order him around, people touching his friends Personality: The type who subtly holds the center of the delinquent group. Usually, he has little expression and a relaxed way of speaking, but his personality itself is quite strong. He's not the type to step forward and be noisy, but rather watches the situation and says a word when necessary. He's mischievous, so he acts slyly toward close friends and enjoys teasing people. He has strong pride and hates being pushed around by others, and he definitely takes care of the people in his group.