Lee Jung-hyun as Jang Hyo-seung

Seo Young-joo as Jang Ji-gu

Kang Rae-yeon as Ji-young

Jeong Seok-yong as Mr. Kim

Seo Young-hwa as Judge

Bae Sung-woo as Seoul Probation Officer

Kim Ha-eun as Juvenile Probation Counselor

Kang Hyuk-il as Ok-hyun

Jun Ye-jin as Kim Sae-rom

Choi Won-tae as Jae-bum

Son Hee-soon as Ji-hyeon's Mother