Guest Stars Lee Ji Ah as Kang Yoon Hee Go Doo Shim as Byun Yo Soon Kim Young Min as Do Joon Young Kim Min Suk as Yeo Hyung Gyu Seo Hyun Woo as Section Chief Song Song Sae Byuk as Park Gi Hoon Park Ho San as Park Sang Hoon Chae Dong Hyun as Assistant Manager Kim Jang Ki Yong as Lee Gwang Il Jung Jae Sung as Yoon Sang Tae Jun Gook Hwan as Executive Director Wang Ryu Abel as Jung Chae Ryung Park Soo Young as Lee Jae Chul Ahn Seung Kyun as Song Ki Bum Oh Na Ra as Jung Hee Jung Hae Kyun as Park Dong Woon Seo Sang Won as Sang Hoon's Friend Kwon Na Ra as Choi Yoo Ra Lee Do Hyun as Kwon Shik Shin Dam Soo as Jung Chang Mo Hong In as Jong Soo Park Hae Joon as Gyum Duk