Kim Seok
Baek Yeo-min
Lee Se-young
Jang Woo-rim
나
나아현
Oh Geum-bok
김
김명재
Shin Gi-jong
Jung Sun-kyung
Yeo-min's mother
Ahn Nae-sang
Teacher
Ji Dae-han
Yeo-min's father
Choi Deok-moon
Park Pal-bong
Seo Jin-won
Ha
Shin Jung-keun
Jebi's father
Jung Ae-yeun
Kim Yoon-hee
N
No Hyeon-jeong
Jebi's mother
Lee Young-sook
Woo-rim's mother
Go Seo-hee
Shin Gi-soon
Choi Sung
Principal
K
Kim Myeong-sin
Choi Neung-ja
K
Kim Kyu-min
Class president