as Ryu Sun-jae
16 episodes
as Im Sol
16 episodes
as Kim Tae-sung
16 episodes
as Baek In-hyuk
16 episodes
as Park Bok-soon
16 episodes
as Jung Mal-ja
16 episodes
as Im Geum
16 episodes
as Lee Hyun-joo
16 episodes
as Ryu Geun-deok
16 episodes
as Kim Seok-hyun
16 episodes
as Park Dong-seok
16 episodes
as Jay
16 episodes
as Hyun-soo
16 episodes
as Kim Won-chul
16 episodes
as Lee Kyung-ja
16 episodes
as Choi Jung-hoon
16 episodes
as Kim Young-soo
16 episodes
as Cha I Seul [Tae Seong's friend]
16 episodes
as Self
1 episode
as Self
1 episode
as Self
2 episodes
as Cheonsin
1 episode
as
1 episode
as Kim Hyung Gu (Seon Jae's rival)
1 episode
as Kim Do Jun
1 episode
as In Hyuk's mom
1 episode
as In Hyuk's dad
1 episode
as Math Teacher
1 episode