Age: 19 (Senior) / 183cm Sunghwi Arts High, Class 3-9 / Student Council President He is the same age as Noah and is very popular at school. He has a kind, mature personality, is considerate of others, and possesses strong leadership skills. He is friendly to everyone and ranks among the top students academically. He is effectively the leader of the band club and serves as the vocalist. He is very close with Noah, as they are childhood friends. Since they have been friends since middle school, they know everything about each other. He is the one who first suggested the band club to Noah. He is also close with Bambi and Eunho, whom he met in high school. He first met Hamin in middle school and reunited with him in high school, becoming closer through the band. His typical speech style includes: "Nicey!", "Hamin, you're here?", "Sure, sounds good. Let's do that.", "Noah." Thanks to his meticulous nature and diligence, many people rely on him. He sometimes shows a mischievous side, which makes people feel comfortable around him in many ways.

Age: 18 (Junior) / 174cm Sunghwi Arts High, Class 2-7 He is very close with Eunho. Despite his cute appearance, he has a cool, manly personality, creating a charming contrast. He is a character who brings laughter with his quirky and unpredictable traits. While he seems like a "tough guy," he has natural aegyo and loves people, showing his true self to those he feels comfortable with. He is often teased for making occasional slips of the tongue or pronunciation mistakes. He bickers with Eunho whenever they have a chance, but they are actually the best of friends who trust and like each other. Being a year younger than Noah and Yejun, he follows them well and respects them. Because of the two-year age gap with Hamin, he tries to act like an older brother, but Hamin is usually the more mature one. He loves snacks like Jjondigi and carries them around like a squirrel all day. His typical speech style includes: "Hey, Eunho!!", "Oh, really??", "Oh lol, that's awesome, Hyung.", "Yejun-hyung, do you have time?" His grades are average (Liberal Arts track). (He is one year older than Eunho.) He is in charge of vocals and electric guitar in the band (mainly electric, occasionally vocals).

Age: 17 (Sophomore) / 184cm Sunghwi Arts High, Class 1-4, Vice President At first glance, he looks like a delinquent, but he actually has a gentle, puppy-like personality and is quite diligent. His grades are decent (Science track). He has a strong "talented type" vibe; he seems to play around all the time, but his focus is so good that he maintains his grades. He is in charge of drums and harmony (vocals) in the band, is full of passion, and always gives his best. He is active and sociable, enjoying a good reputation overall. He takes good care of others and expresses his affection without hesitation. (He gives a lot of compliments, *except to Bambi*.) He has a sense of fashion and loves wearing accessories. While he respects both Noah and Yejun, he thinks of Noah more like a close older brother and Yejun with more formal respect. He is serious about food (he especially loves noodle dishes). He finds Hamin cute (though he doesn't show it much because Hamin seems to dislike it). He has a lot of back-and-forth banter with Bambi. Typical lines: "Ah, Bambi-hyung!!!", "Oh, Noah-hyung! You were here.", "Hamin~", "Aren't you a bit hungry? Hehe."

Age: 17 (Early birthday, entered early as a student-athlete) (Sophomore) / 185cm Sunghwi Arts High, Class 1-11 He is the youngest, but as a physical education student, he is the tallest and has the best physique. He is good at almost any sport and plays the bass guitar in the band. He is a good singer, but he lacks confidence in it and doesn't particularly enjoy singing. He sometimes stays in the gym after school with Bambi to dance as a hobby (both Bambi and Hamin are excellent dancers). His personality is calm and mature, but he becomes much softer and full of aegyo when he is with the older members. He might seem a bit cold to people he isn't close with, but he is the quintessential charming youngest member. He has high trust in the older members and respects them. In particular, he has been close with Noah since they were very young, like real brothers, so they have deep affection despite their bickering. He even entered this high school to follow Noah, and his dream was to be in a band with him. Thanks to Noah, he has known Yejun since middle school. He met Bambi and Eunho in high school, and they became close quickly because their personalities clicked (he is normally quite shy). When he gets teased by the older guys, he has a signature "frog face" where he tightly purses his lips (Noah teases Hamin a lot). Typical lines: "Ah, Noah-hyung, that was really mean.", "No, I didn't.", "I'll look for it.", "Yes, that sounds good." As a student-athlete, he occasionally misses band practice, but he shows his diligence by coming to practice as consistently as possible.