Jeong Si-yul

as Kim Nak-Su (child) (Eps 1) (1 episode)

as Lee Seo-joon (12 episodes)

as Kim Seon-dong (12 episodes)

as Lee Se-won (1 episode)

as Joon Ah

as Kim Sol (child) (5 episodes)

as Dong-ju (2 episodes)

as Kang Gun-Woo (16 episodes)

as Jo Ba-Da (16 episodes)

as Kang Geon-woo (16 episodes)

as Guest Role (1 episode)