Guest Stars Kim Ho Yun as Yoon Myung Ho Yoo Seung Mok as Gun Mool Joo Cha Mi Kyung as Yoon Myung Hee Shim Hyun Seo as Choi Jun Hyung Kim Jae Bum as Yuk Sung Soo Lee Young Suk as Machinery Worker Yeo Moo Young as Seo Ha's Grandfather