Guest Stars Lee Ji Ah as Kang Yoon Hee Seo Hyun Woo as Section Chief Song Kim Young Min as Do Joon Young Park Ho San as Park Sang Hoon Go Doo Shim as Byun Yo Soon Chae Dong Hyun as Assistant Manager Kim Song Sae Byuk as Park Gi Hoon Kim Min Suk as Yeo Hyung Gyu 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 Son Sook as Lee Bong Ae Jung Hae Kyun as Park Dong Woon Oh Na Ra as Jung Hee Ahn Seung Kyun as Song Ki Bum Seo Sang Won as Sang Hoon's Friend Kwon Na Ra as Choi Yoo Ra Lee Do Hyun as Kwon Shik Shin Goo as CEO Jang Shin Dam Soo as Jung Chang Mo Park Hae Joon as Gyum Duk
