Gong Yoo
Kang In-ho
Acting
Jung Yu-mi
Seo Yoo-jin
Acting
Kim Hyeon-soo
Kim Yeon-doo
Acting
Jung In-seo
Jin Yoo-ri
Acting
Baek Seung-hwan
Jeon Min-soo
Acting
Jang Kwang
Principal / Principal's Brother
Acting
Kim Joo-ryoung
Yoon Ja-ae
Acting
Kim Min-sang
Park Bo-hyeon
Acting
Lim Hyun-sung
Young-hoon
Acting
Jeon Kuk-hwan
Attorney Hwang
Acting
Choi Jin-ho
Prosecutor
Acting
Kwon Hong-suk
Judge
Acting
Uhm Hyo-seop
Police Officer Jang
Acting
Park Hye-jin
Principal's Wife
Acting
Kim Ji-young
In-ho's Mother
Acting
Kim Ji-young
Sol-yi
Acting
Uhm Ji-sung
Young-soo
Acting
Lee Sang-hee
Auto Repair Shop Owner
Acting
Nam Myung-ryeol
Professor Kim Jung-woo
Acting
Park Kyoung-hee
Hostess 2
Acting
Jang So-yeon
Courtroom Sign Language Interpreter
Acting
Hong Seok-yeon
School Custodian
Acting
Heo Jae-ho
Broadcasting Station PD
Acting
Jung Hyung-suk
Publishing Company Employee
Acting