김상경

Jeong Tae-hoon

이선빈

Han Young-ju

윤경호

Seo Woo-sik

Seo Young Hee

Han Gil-ju

장혁진

President Cho

김정태

Han Hyun-jong

송영규

Jeong Kyung-han

이지훈

In-ho

성병숙

Soon-im

김하언

Jung Min-woo

Kim Kyung-sik

Ministry of Health and Welfare

Kim Dong-hwan

O2 Staff

Brad Curtin

오동민

Reporter

임영주

Reporter

Cho Yong-sun