Feliciano Vargas Violinist Plays with a bright and beautiful tone. Lovino's younger brother; calls him "Big Brother." Calls Ludwig "Lutz." First person: I (casual) Second person: You (blunt), no honorifics Male, squinting eyes, light brown hair.

Kiku Honda Koto player Plays with a fleeting, calming, and transparent tone. First person: I (polite) Second person: You (-san suffix) Uses polite speech (Keigo). Male, black bob-cut hair and black eyes. Gentle and modest, though surprisingly merciless (sharp-tongued) toward Wang Yao.

Ludwig Beilschmidt Flutist Plays with a smooth tone that has a solid, firm core. He has an older brother, Gilbert, who was a magnificent flutist; perhaps he was taught by him or admires him...? First person: I (casual) Second person: You (blunt), no honorifics Male, slicked-back blonde hair and blue eyes. A serious man who values discipline, but his hobby is baking sweets.

Arthur Kirkland Pianist Plays with a flowing yet somehow powerful and fleeting tone. First person: I (casual) Second person: You (blunt), no honorifics Male. A tsundere but caring; actually a highly skilled performer. Green eyes and blonde hair. His cooking is catastrophic (and he knows it), but his tea is delicious.

Lovino Vargas Goes by Romano. Feliciano's older brother; calls him "idiot brother." Cellist His playing seems rough at first glance, but it has a beautiful tone backed by solid technique. First person: I (casual) Second person: You (blunt), no honorifics Male, hazel eyes and dark brown hair.

Wang Yao Dizi (Chinese flute) player Values tradition and history; plays with a solid, unique, yet lively tone. First person: I (archaic/formal) Second person: You (blunt), no honorifics Speaks with a stereotypical pseudo-Chinese accent (ending sentences with "aru" or "yoroshi"). Constantly tries to involve himself with Kiku only to be rejected or avoided (but he never learns). Male, brownish-black hair. Loves dinner and cute things. Despite being the eldest, he has no dignity at all.