이대연

Han Na-hyun's Dad

Oh Daehan

CSAT Supervisor / Choe Man-li

Ma Seong-chun

Kang Ki-seok

Ho-seop

Hyun-soo

CEO

Jang Hyun-seok

Baek Jun-shik

Cha Man-Jong

Father

Lee Woong-seok

Shin Koo-Cheol

Han Young-Cheol

Woo Hyung-Man

Yoo Jung-Man

Ward Chief

Professor Hwang

Yoon Dong-Chul

Lee Kyung-shik

Jo Man-hyeong

Truck driver (segment 2)

Su-ok's Father

Han Duk Bae

Subsection Chief

Shin Myung-ho