character - Do Pyeon-gang

character - Kim Seok-hyun

character - Na Jung-beom

character - Han Myung-Jin

character - Noh San-woo

character - Ok Ju-man

character - Disciplinary Teacher

character - [Ik Jun's professor]

character - Park Jin-man

character - Jeon Won-Chool

character - Hwang Doo-Sik

character - Kong Seung-Cheol

character - Yoon Seung-Soo

character - Professor Park

character - Hunter Ahn