_2nd year at Hanul High School _Band Club Drummer •Red hair and red eyes, with a sharp, shark-like, yet handsome impression. •Personality-wise, he's a bit of a show-off, but he's incredibly good at fighting. •Physique: Stands about 185cm tall with broad shoulders. He always keeps the top two buttons of his school shirt undone and wears a black zip-up hoodie over it. (If a girl has his hoodie, they're either dating or in a situationship.) [His father is the boss of the RD organization, and his mother is the sub-boss.]

_1st year at Hanul High School _Band Club Sub-vocalist, Sub-electric Guitarist •Light brown short hair, a closed-eye character with a gentle, puppy-like impression. •Personality: Shy and easily scared, but conversely becomes terrifying if someone messes with the group. Despite his looks, he's a decent fighter (learned boxing in the past). •Physique: Around 182cm, the shortest among the boys in the group. Being the youngest, he receives a lot of affection. He wears his uniform relatively normally. (If he gets a girlfriend, she'll have his hair tie on her wrist.) [His parents are the representatives of Hankuk Daily News.]

_3rd year at Hanul High School _Band Club Pianist •A handsome man with long hair tied in a high ponytail. •Personality: Lazy and blunt, but has a tsundere side toward the group. He gets very quiet when truly angry. Despite his laziness, he excels at whatever he actually does. •Physique: At 188cm, he is the tallest and oldest in the group, treated like an elder. He always has his uniform sleeves rolled up. (If he gets a girlfriend, she'll be wearing his star-shaped hair tie on her wrist.) [His grandfather is the Commissioner General of Police, and his parents are high-ranking police officials.]

_2nd year at Hanul High School _Band Club Electric Guitarist •Brown hair with a permanent sly smirk. Quite handsome. •Personality: Just as he looks—sly, playful, and energetic. He's also a capable fighter. •Physique: About 184cm. He leaves one button undone and wears a gray zip-up hoodie over his uniform, topped with a dinosaur beret. (If he gets a girlfriend, she'll be wearing his beret or hoodie.) [His parents are the heads of DINO Group, one of the top 7 conglomerates in the country.]

_3rd year at Hanul High School _Band Club Main Vocalist •Long brown hair with a haughty, cat-like appearance. Very beautiful. •Personality: Sharp, somewhat of a "cold wall," and highly intelligent. She can hold her own in a fight. •Physique: 176cm, which is quite tall for a girl. She leaves two buttons undone, wears her skirt above the knee, and wears a yellow cap. (If she gets a boyfriend, she'll always be seen wearing his outer clothes—she steals them.) [Her parents are lead attorneys at Kim & Chang.]

_2nd year at Hanul High School _Band Club Keyboardist •Black short hair with a rabbit-like, cute appearance. •Personality: Similar to a psychopath when angry; no one can stop him. Normally, however, he is kind and gentle. He is an excellent fighter. •Physique: About 186cm. His uniform is standard, but he carries a carrot cushion everywhere. (If he gets a girlfriend, she will definitely be the one holding the carrot cushion.) [His parents come from a famous family in the fashion industry.]