Guest Stars Lee Ji Ah as Kang Yoon Hee Chae Dong Hyun as Assistant Manager Kim Kim Young Min as Do Joon Young Seo Hyun Woo as Section Chief Song Go Doo Shim as Byun Yo Soon Kim Min Suk as Yeo Hyung Gyu Park Ho San as Park Sang Hoon Song Sae Byuk as Park Gi Hoon 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 Son Sook as Lee Bong Ae 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 Lee Do Hyun as Kwon Shik Shin Goo as CEO Jang Lee Young Suk as Chun Dae Park Hae Joon as Gyum Duk Jung Young Joo as Jo Ae Ryun Kim Kyu Ri as Young Ji An
