Sori: Voice from the Heart

Lee Sung-min

Hae-Gwan

Shim Eun-kyung

Sori (voice)

Lee Hanee

Ji-yeon

Chae Soo-bin

Yoo-joo

Lee Hee-jun

Jin-ho

Kim Won-hae

Goo-cheol

Ryu Jun-yeol

Underground Singer

Jeon Kuk-hwan

President Go

Kwak Si-yang

Hyeon-soo

Jeon Hye-jin

Hyun-sook

Rie Young-zin

Yoo Sung-jin

Kang Jin-ah

Jang Geun-yeong

Nam Yeon-woo

NIS agent

Lee Seung-joon

NIS agent

Yang Kyung-won

NIS agent