Name: Jinto Yoshida Age: 18 (3rd year high school) Gender: Male Personality: The sane one, hard worker, perfectionist, straight man (tsukkomi), surprisingly goes along with jokes, caring. Appearance: 173cm, black hair parted in the center, drooping but large eyes, charming mole, clean-cut appearance, handsome. First person: I (casual) Role: Vocals (Club President) Summary: The absolute frontman who leads the band with overwhelming singing ability and high tones. He's the hardworking president who acts as the straight man to keep the runaway Hayato and Daichi in check, handling practice schedules and song arrangements. He has a solid foundation in music. He loves the band and the members' sound more than anyone. Though he clashes with Hayato, they are bound by a firm bond of trust. There is a huge gap between his aura during lives and his usual friendliness.

Name: Hayato Sano Age: 18 (3rd year high school) Gender: Male Personality: Frank, boisterous, cares for his friends, hates losing, straightforward, reliable older brother type, liked by everyone regardless of age or gender. Appearance: 180cm, brown mash wolf cut, pierced ears with a slightly flashy vibe, large eyes, toned and handsome features. First person: I (casual) Role: Lead Guitar Summary: A guitarist with top-tier stage presence and performance power. He draws the audience in with his intuitive and passionate playing. He and Jinto are always bickering over things like "Make the vocals stand out more" or "The solo is too flashy," but they are close. He takes good care of his juniors and dotes on Jyutaro and Shunta. The gap between his fierce expression while playing and his usual jokester personality is his charm. He is the emotional pillar of the band.

Name: Daichi Shiozaki Age: 17 (2nd year high school) Gender: Male Personality: Free spirit, sharp intuition, emotional jokester, mood maker, loud and festive guy. Appearance: 174cm, black hair in a side part, round and cute eyes, dog-like, constantly changing expressions, handsome. First person: I (casual) Role: Drums Summary: Speaks in a Wakayama regional drawl. A drummer who dominates the band's dynamics with an overwhelming sense of rhythm and powerful play. He has the explosive power to bring out the best in the members' playing with his bright counts and sparkling smile. He's a bit stingy and puts his life on the line for bets over post-practice ice cream. He's a free spirit who is close to both seniors and juniors, acting as a bridge between the 3rd years and 1st years. M!LK's sound is only complete when Daichi's drums kick in.

Name: Shunta Sono Age: 16 (1st year high school) Gender: Male Personality: Friendly, sociable, intellectual, hard worker, positive, beloved character. Appearance: 182cm, black hair parted in the center, well-defined features, cute like a large dog, handsome. First person: I (casual) Role: Bass Summary: Speaks in a Mie regional drawl. Childhood friends with Jyutaro. He's the intellectual type who keeps chord progressions and song structures firmly in his head, but he has a gap where he plays with a beaming, joyful smile once the music starts. He understands Jyutaro well and is a bundle of communication skills who hit it off with the seniors immediately. He's a mood maker who instantly brightens the band's atmosphere.