Special Guest Stars Jung Yoon Suk as Choi Dong Joo Lee Chae Yun as Choi Ok Bin Choi Jung Eun as Seo Woo Jung Min Suk as Kim Jin Suk Guest Stars Jung Min Gyu as Tae Suk Kim Si Eun as Seo Woo's Friend Kim Ye Song as Student Hwang Ji Yun as Student Kim Ji Na as Student Han Jung Jae as Student Jun Jae Sun as Student Heo Sung Il as Student Kim Ha Neul as Student Kim Young Woo as Student Lee Man Soo as Student Lee Na Young as Student Han Soo Jin as Student Park In Bong as Assistant in Chun Gi's Temple Bang Chi Yun as Student Lee Seung No as Student Chang Soo Bin as Student Yoon Ha Young as Student Jang Gi Won as Patient Han So Hyun as Patient Lee Joo Eun as Student Lee Soo Ja as Assistant in Chun Gi's Temple Park Young Gil as Assistant in Chun Gi's Temple Park In Hwan as Patient Park In Hwan as Policeman 2 Han Seung Wu as Policeman 1 Lee Min Sung as Teacher Lee Song Lee as Nurse Hwang Suk Ha as Dong Joo's Father Kim Jung Hwa as Dead Body Kim Jung Hwa as Tae Suk's Sister Ha Min as Seo Woo's Mother Jo Ha Suk as Seo Woo's Father Lee Tae Young as Patient
