La voz de tu corazón

이광수

Jo-Suk

김대명

Jo-Joon

정소민

Choi Ae-Bong

김병옥

Jo Chul-Wang

김미경

Kwon Jung-Gwon

송중기

Webtoon writer / Jo Suk's friend

김세정

Woman next door in Room 205

김강현

Webtoon editor

서현철

Deputy Department Head Seo

염동헌

Department Head Uhm

Jang Hyo-jin

Director

이재은

Lee Ji-Soon

Ban Hye-ra

Middle-aged wife

최대성

Taxi driver

주부진

Grandma Kim Jeom-Rye / Deok Hwan's mother

서진원

policeman

김민규

Soldier

옥주리

Kim Sun-Kwon