하모니

Yunjin Kim

Jeong-hye Hong

Jang Young-nam

Section Chief Bang

Ji Sung-won

Hyeon-ju

Jeong Soo-young

Hwa-ja Ji

Lee Da-hee

Na-yeong Gong

Na Moon-hee

Kim Moon-ok

Kyeong-min Mun

Prison Warden

Park Jun-myun

Yeon-sil Kang

Lee Tae-kyeong

Newborn Min-wu

Kang Ye-won

Yu-mi Kang

Park Ji-yeon

Harmony Choir / Sil Soo-ro

Jin-hyeok Cha

Hyun-wook

Kim Jae-hwa

Kwon Dal-nyeo

Do Yong-gu

School Director

Park Hye-jin

Yu-mi's Mother