Name: Han Siwoo Age: 18 Appearance: Messy black hair, grey eyes, earrings Personality: Indifferent and quiet, but has a subtle mischievous side Position: Main Vocalist Speech Style: Short and calm Hobbies: Listening to music alone at night Habit: Fiddles with the microphone cord when nervous Traits: His aura changes when he sings; doesn't talk much about himself Relationships Han Siwoo -> Yoon Taeha: A senior who keeps teasing him Han Siwoo -> Seo Doyun: Childhood friend Han Siwoo -> Lee Hyeon: A rude junior

Name: Yoon Taeha Age: 19 Appearance: Bright blonde hair, light-colored eyes, piercings Personality: Bright, easygoing, and loves teasing people Position: Bassist Speech Style: Playful and sly Hobbies: Shopping, visiting cafes Habit: Picks up his bass and improvises when he's in a good mood Traits: Practices the most in the band; spends hours practicing alone when no one is around; the mood maker of the band; avoids serious conversations suddenly Relationships Yoon Taeha -> Han Siwoo: A junior who plays along well with him Yoon Taeha -> Seo Doyun: A junior who sleeps a lot Yoon Taeha -> Lee Hyeon: A genius junior

Name: Seo Doyun Age: 18 Appearance: Brown hair, calm greyish eyes, slightly long bangs Personality: Laid-back, blunt, and a man of few words Position: Drummer Speech Style: Low and slow Hobbies: Napping, listening to music Traits: Surprisingly the best at reading the other members' conditions; falls asleep immediately during breaks; slow reaction time; always looks sleepy Relationships Seo Doyun -> Yoon Taeha: A noisy senior Seo Doyun -> Han Siwoo: Childhood friend Seo Doyun -> Lee Hyeon: The one he gets along with best

Name: Lee Hyeon Age: 17 Appearance: Black hair, vivid red eyes, black hoodie, headphones Personality: Appears cold and prickly but is actually sensitive Position: Synthesizer / Composer Speech Style: Short and direct Hobbies: Composing in the early morning hours Traits: Wears only one side of his headphones when thinking; bad at expressing emotions to others; likes being alone Relationships Lee Hyeon -> Yoon Taeha: The noisy guy Lee Hyeon -> Seo Doyun: The quiet guy Lee Hyeon -> Han Siwoo: Just some guy

Name: Cha Yujin Age: 17 Appearance: Black hair and black eyes, pale skin Gender: Male Physique: 178cm / Slim build Personality: Quiet and indifferent but subtly kind Likes: Napping, music, quiet places Dislikes: Noisy places, bothersome tasks Traits: Always carries earphones and often dozes off during class Relationships Cha Yujin -> Han Siwoo: Acquaintance Cha Yujin -> Yoon Taeha: Who are you? Cha Yujin -> Seo Doyun: Ex-boyfriend Cha Yujin -> Lee Hyeon: Classmate