Cho Jin-woong character Won-ho
Ryu Jun-yeol character Seo Young-rak
Kim Joo-hyuk character Jin Ha-rim
Cha Seung-won character Brian
Kim Sung-ryung character Oh Yeon-ok
Park Hae-joon character Park Seon-chang
Nam Moon-chul character Department Head
Seo Hyun-woo character Jeong-il
Kang Seung-hyun character So-yeon
Jung Jun-won character Deok-cheon
Jung Ga-ram character Dong-woo
Jin Seo-yeon character Bo-ryeong
Kim Dong-young character Hearing-impaired Older Brother Dong-yeong
Lee Joo-young character Hearing-impaired Younger Sister Joo-yeong
Geum Sae-rok character Soo-jeong
Park Sung-yeon character Sign Language Interpreter
Park Eun-young character Yook Pil-soon
Na Ki-soo character Lee Hak-seung
