In 2023, high school student Eun Gyeol, a CODA with a passion for music, leads a double life as a model pupil by day and a guitarist by night. When he discovers a mysterious music store, he's unexpectedly transported…
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Ryeoun
Ha Eun-gyeol
Choi Hyun-wook
Ha Yi-chan
Seorina
Choi Se-gyeong / On Eun-yu
Shin Eun-soo
Yoon Chung-ah
Choi Won-young
Eun-gyeol's Father
Seo Young-hee
Eun-gyeol's Mother
Jung Sang-hoon
Master
Cheon Ho-jin
Grandpa Viva
Goh Doo-shim
Go Yang-hee
Kim Joo-ryoung
Im Ji-mi
Bong Jae-hyun
Ha Eun-ho
Koo Jun-hoe
Koo Jun-hyeong