Lee Cheon-mu

as Seong-ho

as Kim Kang-hoon (2 episodes)

as Oh Won-seok (1 episode)

as Yang Gwan-sik (child) (6 episodes)

as Joseph (2 episodes)

as Bo-ra's Brother

as Han Min-beom (1 episode)

as Gyeol-yi (1 episode)

as Song Ha-young (young) (2 episodes)

as Orphanage Boy (2 episodes)

as Won-jun (1 episode)

as Little Boy (1 episode)

as Self - Guest (1 episode)