as Yeon Si-eun
16 episodes
as Park Hu-min
8 episodes
as Ahn Su-ho
16 episodes
as Oh Beom-seok
16 episodes
as Yeong-i
8 episodes
as Seo Jun-tae
8 episodes
as Jeon Yeong-bin
8 episodes
as Jeon Seok-dae
8 episodes
as Choi Hyo-man
9 episodes
as Kang Woo-young
8 episodes
as Lee Jeong-chan
8 episodes
as Han Tae-hoon
8 episodes
as Na Baek-jin
8 episodes
as Kim Gil-su
8 episodes
as Go Hyun-tak
8 episodes
as Geum Seong-je
8 episodes
as Yeong-bin's Friend
1 episode
as Yeong-bin's Friend
1 episode
as Baseball Player
1 episode
as Yeong-bin's Mother
1 episode
as Kim Won-seok
2 episodes
as Police Officer 1
1 episode
as Police Officer 3
1 episode
as Kim Hui-jun
1 episode
as Jeong-chan's Friend
1 episode
as Child Yeon Si-eun
1 episode
as An Su-ho's Grandmother
1 episode
as School Principal
1 episode
as Homeroom Teacher
1 episode
as Choi Chang-hee
4 episodes
as Si-eun's Mother
5 episodes
as Psychiatrist
1 episode
as Baek Dong-ha
6 episodes
as Do Seong-mok
6 episodes
as 2-4 Homeroom Teacher
3 episodes
as 2-7 Homeroom Teacher
1 episode
as Baku's Father
6 episodes
as Police Officer
1 episode
as Seoknam's Gorilla
3 episodes
as Child Park Hu-min
2 episodes
as Baek-jin's Classmate
1 episode
as Detective
1 episode
as Orphanage Director
1 episode