사이코지만 괜찮아

Kim Soo-hyun

as Moon Gang-tae

서예지

as Ko Moon-young

박규영

as Nam Joo-ri

오정세

as Moon Sang-tae

김주헌

as Lee Sang-in

김창완

as Oh Ji-wang

장영남

as Park Haeng-ja

김미경

as Kang Soon-deok

강기둥

as Jo Sae-joo

박진주

as Yoo Seung-jae

Kang Ji-eun

as Park Ok-ran

김기천

as Kan Pil-ong

정재광

as Joo Jeong-tae

Ji Hye-won

as Lee Ah-reum

주인영

as Yoo Sun-hae

이얼

as Go Dae-hwan

최우성

as Oh Cha-yong

최희진

as Kang-tae and Sang-tae's Mother

장규리

as Seon-byul

Kim Su-in

as Young Go Moon-young

문우진

as Young Moon Gang-tae

이규성

as Young Moon Sang-tae

Seo Joon

as Kwon Min-seok

Ha Kyoung-min

as Psychiatrist at OK Psychiatric Hospital

정지현

as Publishing House Staff

Cheon So-Ra

as Publishing House Staff

Yu Yeon Seok

as Publishing House Staff

Jung Ji-hwan

as Publishing Co. Staff

고한민

as Publishing House Staff