Cast

L
Lee Hyun-woo
as Kang Han-Kyeol
J
JOY
as Yoon So-Rim
C
Choi Min-soo
as Kang In-Woo
L
Lee Jung-jin
as Choi Jin-Hyuk
K
Kim In-kwon
as Homeroom Teacher
I
Im Ye-jin
as Kim Soon-Hee
L
Lee Seo-won
as Seo Chan-Young
S
Sung Joo
as Yoo Shi-Hyun
H
Hong Seo-young
as Chae Yoo-Na
S
Song Kang
as Baek Jin-Woo
J
Jang Ki-yong
as Ji In-ho
L
Lee Su-ryeon
as Reporter
J
Jung Yoo Geun
as Kang Han-Kyeol (child)
L
Lee Yoo-jun
as [sound engineer]
L
Lee Seo Hyeon
as Yoon So-Rim (child)
K
Kang Soo-jeong
as [Yoo Hyun Jung's assistant]
K
Kim Yong-geon
as [Yoo Hyun Jung's father, chairman Who Entertainment]
Y
Yoo Jang-yeong
as Lee Kyoo Sun
Y
Yoo Joo-won
as Lee Kyoo Sun (young)
L
Lee Hye-bin
as Trainee
Y
Yeon-woo
as Trainee
K
Kim Na-yun
as Trainee
P
Park Hae-soo
as Bass player
Y
Yang Kyung-won
as [director of the competition]
L
Lee Jun Yong
as [ member boy group from show "Produce 20"]
L
Lee Sang Ho
as [ member boy group from show "Produce 20"]
G
Go Bon Kuk
as [ member boy group from show "Produce 20"]
H
Han Jae Un
as [ member boy group from show "Produce 20"]
K
Kim Ji-woong
as [ member boy group from show "Produce 20"]