Kim Sang-kyung

Jeong Tae-hoon

Lee Sun-bin

Han Young-ju

Yoon Kyung-ho

Seo Woo-sik

Seo Young-hee

Han Gil-ju

Jang Hyuk-jin

President Cho

Kim Jung-tae

Han Hyun-jong

Song Young-gyu

Jeong Kyung-han

Seong Byeong-suk

Soon-im

Kim Ha-eon

Jung Min-woo

Kim Kyung-sik

Ministry of Health and Welfare

Kim Dong-hwan

O2 Staff

Brad Curtin

Oh Dong-min

Reporter

Lim Young-joo

Reporter

Ko Seo-jeong

Audience

Cho Yu-jin

Victim 4

Cho Seo-hoo

Eun-jeong

Lee Ji-hoon

In-ho