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 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 Seo Sang Won as Sang Hoon's Friend Jung Hae Kyun as Park Dong Woon Kwon Na Ra as Choi Yoo Ra Lee Do Hyun as Kwon Shik Shin Dam Soo as Jung Chang Mo Shin Goo as CEO Jang Lee Young Suk as Chun Dae Hong In as Jong Soo Park Hae Joon as Gyum Duk Kim Young Goo as Cafe Owner Choi Hee Do as Moon Chan Yong Kim Kyu Ri as Young Ji An