김정균
— Won-sool
Oh Ye-seol
— Jaya
황도원
— Min-kyeong
Kim Saet-byeol
— Hye-seon
Lee Cheol-hee
— Yoo-jeong
Park Na-Ye
— Bo-ra
Yoon Ra-young
— Soon-yeong
Jeong Ui-cheol
— Tae-seong
Kim Jong-won
— Hwi-ram
Kim Jeong-yun
— Seung-woo
Lee Jae-ah
— Ye-cheon
Yun Sun-hong
— Principal
Son Mi-hee
— Female teacher 1
Yang Hye-kyeong
— In-mi