On screen
Cast
23 credited performers
Ji Chang-wook
Yoon Gyeo-rea
Sooyoung Choi
Seo Yeon-joo
Sung Dong-il
Kang Tae-sik
Won Ji-an
Ha Jun-kyung
Nam Tae-hoon
Jang Seok-jun
Yang Hee-kyung
Yeom Soon-ja
Kil Hae-yeon
Choi Deok-ja
Yoo Soon-woong
Hwang Cha-yong
Jeon Chae-eun
Yoo Seo-jin
Shin Ju-hwan
Yang Chi-hun
Park Se-jun
Wang Jin-gu
Park Jin-joo
Se-hee
Min Woo-hyuk
Pyo Gyu-Tae
Kang Chae-min
Dong-ho
Han Sa-myeong
Cheol Min [Gyu Tae's Manager]
Jin Mo
Musical director
Lee Gyu-young
Audition security staff
Kim Si-eun
Kang Soo-Jin
Kim Bong-soo
Patient
Lee You-mi
New volunteer
Woo Kang-min
Fitness Instructor
Choi Seo-yoon
Hee-sook
Kim Yannie
Lee Gil-yong's Wife