Full cast of Soundtrack #1

Park Hyung-sik

Han Sun-woo

4 episodes

Han So-hee

Lee Eun-soo

4 episodes

Lee Jung-eun

Eun-soo's Mother

4 episodes

Kim Ju-hun

Kang Woo-il

4 episodes

Yoon Byung-hee

Yoon Dong-hyun

4 episodes

Kim Do-shin

CEO

4 episodes

Yoon Seo-ah

Kim Seo-yeon

1 episode

Bae Hyun-kyung

Director

1 episode

Seo In-guk

Jay Jun

1 episode