Seo Dong-won
Doctor Kim
윤해영
Oh Mi-Ja
윤다훈
Kang-Woo's father
신도현
Baek Jang-Mi
Kim Yeong-ok
Chairwoman Han
Hwang Woo-seul-hye
Lee Kang-Hee
장유상
Choi Ho-Dol
주해은
Lee Joo-Hee
Park Young-soo
Vice principal of Sinhwa high school
