Cast

J
Jinyoung
as Lee Ahn
S
Shin Ye-eun
as Yoon Jae In
K
Kim Kwon
as Kang Sung Mo
K
Kim Da-som
as Eun Ji Soo
C
Cho Byeong-kyu
as Kang Sung Mo (young)
J
Jeon Mi-seon
as Kang Eun-ju
G
Go Youn-jung
as Kim So-hyun
R
Ro Jong-hyun
as Lee Dae-bong
J
Jeong Seok-yong
as Yoon Tae-ha
J
Jang Eui-soo
as Lee Seung-yong
L
Lee Seung-joon
as Kang Geun-taek
S
Sa Kang
as Hong Soo-yeon
K
Kim Hyo-jin
as Oh Sook-ja
K
Kim Ki-moo
as Hong Jeong-soo
U
Uhm Hyo-seop
as Eun Byeong-ho
K
Kim Won-hae
as Math Teacher
P
Park Cheol-min
as Nam Dae-nam
C
Choo Ye-jin
as Eun Ji Su [Teen]