On screen
Cast
50 credited performers
Lee Kwang-soo
Jo-Suk
Kim Dae-myung
Jo-Joon
Jung So-min
Choi Ae-Bong
Kim Byeong-ok
Jo Chul-Wang
Kim Mi-kyung
Kwon Jung-Gwon
Kim Kang-hyun
Webtoon editor
Seo Hyun-chul
Deputy Department Head Seo
Choi Dae-sung
Taxi driver
Yum Dong-hun
Department Head Uhm
Kim Min-gue
Male college student
Ok Joo-ri
Kim Sun-Kwon
Seo Woo-jin
Interviewer
Yoon Jin-yi
Jo Suk's old friend
Lee Su-ji
Interpreter
Park Kyung-hye
Ae Bong's friend
Kim Min-ho
Jo Suk's friend
Song Joong-ki
Webtoon writer / Jo Suk's friend
Kim Se-jeong
Woman next door in Room 205
Jang Hyo-jin
Director
Lee Jae-eun
Lee Ji-Soon
Ban Hye-ra
Middle-aged wife
Joo Boo-jin
Grandma Kim Jeom-Rye / Deok Hwan's mother
Seo Jin-won
policeman
Kang Kyun-sung
Jang Nam-Chul | Kyun Sung
Jung Yi-rang
Kim Yoon-ji
Kim Sook
Kim Sook
Park Na-rae
Jo Suk's old friend
Seo Jung-joon
Jo Suk's classmate
Geum Gwang-san
Jo Chul Wang's subordinate
Kim Roi-ha
Mex / Kim Nam-Chul
Kim Min-kyoung
Club woman picked by Jo Joon
Lee Se-young
Jo Joon's lover
Son Young-soon
Grandma selling gum
Jung Joon-young
man next door in room 205
Kim Tae-won
Self
Shin Dong-yup
Self
Jeon Hyun-moo
Self
Park Seul-gi
Self
Jung So-yeon
Self
Bae Jin-yea
Self
Ahn Sol-bin
Self
Kim Yul-hee
Self
Woo Hyeon
Ae Bong's father
Lee Yong-nyeo
Landlord granma / Ae Bong's neighbor
Yoo Jang-young
television producer
Cao Lu
Chinese actress
Kim Jong-kook
Jo Jong-Wook | Jo Jong-Kook
Gong Seung-yeon
Ye Rim
Shin Gu
Judge
Moon Ji-yoon
Jo Suk's colleague