Choi Kyu-jin (actor)

Yoo Hae-joon, In-ho's nephew from his deceased brother, Yoo In-gook who is a law student and whom he adopted as his son. Ok Chan-yu as young Hae-joon

Shin Yi-kyeom, Shin Chi-soo's son and a member of the Office of Censors

Lee Gi-hoon

Kim Hee-soo (son)