Jo Young-jin

as CEO

as Seo Joong-geun (8 episodes)

as Kim Yang-son (12 episodes)

as Hyun-jin's Father

as Kang Wan-soo (12 episodes)

as Lee Jin-chul (12 episodes)

as Club owner

as In-gook

as No Sang-shik

as Chairman Koo

as Yoo Yeong-gook

as Oh Deok-goo

as Second Vice-Premier

as Bae Byung-gon (10 episodes)

as Vice Director

as Ji-eun's father

as Min Je (50 episodes)

as Minister Park

as Lee Jae Kwak (2 episodes)

as Chief Secretary