Cast (17)
Kim Hyeon-sooKo Seo-Yeon
Jang Dong-yoonHan Ji-Hoon
Seo Ji-hoonBae Joon-Young
Seo Young-jooLee So-Woo
Seo Shin-aePark Cho-Rong
Cho Jae-hyunHan Kyung-Moon
Shin Se-hwiLee Joo-Ri
Ahn Seung-gyunChoi Seung-hyeon
Ahn Nae-sangKo Sang-Joong
Kim Yeo-jinSeo-Yeon's mother
Shin Eun-jungTeacher Kim
Yoo Ha-bokPrincipal
Shim Yi-youngDetective Oh
Ahn Sol-binLee Yoo-Jin
Ji Su-yeonhomeroom teacher
Lee Do-gyeomLee Sung-Min
Kim So-heeKim Soo Hee