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Kang Han-Kyeol is a great yet sullen composer who becomes inspired by the voices of others and keeps his identity secret from people. He meets Yoon So-Rim, a high school student who possesses beautiful singing, whilst un...
Lee Hyun-woo
Kang Han-Kyeol
JOY
Yoon So-Rim
Choi Min-soo
Kang In-Woo
Lee Jung-jin
Choi Jin-Hyuk
Kim In-kwon
Homeroom Teacher
Im Ye-jin
Kim Soon-Hee
Lee Seo-won
Seo Chan-Young
Sung Joo
Yoo Shi-Hyun
Hong Seo-young
Chae Yoo-Na
Song Kang
Baek Jin-Woo
Jang Ki-yong
Ji In-ho
Lee Su-ryeon
Reporter
Jung Yoo Geun
Kang Han-Kyeol (child)
Lee Yoo-jun
[sound engineer]
Lee Seo Hyeon
Yoon So-Rim (child)
Kang Woo-je
[Yoo Hyun Jung's assistant]
Kim Yong-geon
[Yoo Hyun Jung's father, chairman Who Entertainment]
Park Jong Hyuk
Lee Kyoo Sun
신제민
Lee Yoon
Yoo Joo-won
Lee Kyoo Sun (young)
