Guest Stars Kim Joong Ki as Park Joong Ki Son Eun Seo as Park Eun Soo Lee Hae Young as Jang Kyung Hak Baek Sung Hyun as Shim Dae Shik Yesung as Oh Hyun Ho Kim Jae Wook as Mo Tae Goo Kwon Hyung Joon as Chun Sang Pil Jo Young Jin as Bae Byung Gon Lee Do Kyung as Mo Ki Bum Lee Shi Woo as Moo Dong Woo Song Young Kyu as Park Eun Chul Kim Kwon as Psychiatric Doctor