Choi Hyeon-jin

as Joong-seok

as Young-mun

as Yi Beon [Teen] (5 episodes)

as Kim Man Su (1 episode)

as Jung Ji Uk

as Lee Yun-seong (1 episode)

as Kang Han Su [Young] (16 episodes)

as Choi Sang-hyeon (2 episodes)

as Jeong Beop

as Kim Chul (12 episodes)

as [Yoo Yeon's brother] (2 episodes)

as Orphanage Boy (2 episodes)

as King Soon-jo

as Hyeon U (1 episode)

as [Bully student] (1 episode)

as Min-soo

as Jung Ji-wook (1 episode)

as Self (3 episodes)