범죄소년

이정현

Jang Hyo-seung

서영주

Jang Ji-gu

강래연

Ji-young

정석용

Mr. Kim

Seo Young-hwa

Judge

배성우

Seoul Probation Officer

김하은

Juvenile Probation Counselor

강혁일

Ok-hyun

Jun Ye-jin

Kim Sae-rom

Choi Won-tae

Jae-bum

손희순

Ji-hyeon's Mother

전영운

Grandfather