Baek Seung-hwan
Jeon Min-soo
Jang Gwang
Principal / Principal's Brother
Kim Min-sang
Park Bo-hyeon
Jeon Kuk-hwan
Attorney Hwang
Uhm Hyo-seop
Police Officer Jang
Park Hye-jin
Principal's Wife
Kim Ji-young
In-ho's Mother
Lee Sang-hee
Auto Repair Shop Owner
Nam Myung-ryeol
Professor Kim Jung-woo
Jang So-yeon
Courtroom Sign Language Interpreter
Hong Seok-yeon
School Custodian
Heo Jae-ho
Broadcasting Station PD
Jung Hyung-suk
Publishing Company Employee