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Jung Woo-sung - Cheol-su, Son Ye-Jin - Su-jin, Jong-hak Baek - Seo Yeong-min, Seon-jin Lee - Anna Jung (as Sun-jin Lee) , Sang-gyu Park - Mr. Kim, Hie-ryeong Kim - Mother, Ji-hyun Seon - Jeong-eun, Bu-seon Kim - Madam Oh, Hang Lee - Chairman Hwang, In-han Jang - Master Carpenter, Byung-gil Kwon - Doctor Lee (as Pyeong-kir Kwon) , Cheol-jin Shin - Manager Park, Jung-ki Kim - Section Chief Cha, Yong-wook Jin - Construction Worker 1 (as Jin Yong-Ok) , Jin-won Seo - Construction Worker 2