Kim Hwi-gyu

as Ra Byeong-su (1 episode)

as [Library student] (1 episode)

as Motel customer (1 episode)

as No. 173 (10 episodes)

as Cha I Seul [Tae Seong's friend] (16 episodes)

as Ghwa gyung-su

as Brother

as Oh Doo Seok [Mgmt. junior] (1 episode)

as [Interviewer] (1 episode)

as {A Sense of Humor} Seok Gu | {We're Family when We're Apart} [Love letter guy]

as tinder man

as Hwi-gyu

as Min-cheol

as Test Taker No.164

as Manager

as Sung-gu