Lee Jung-hyun

Character: Jang Hyo-seung

Seo Young-joo

Character: Jang Ji-gu

Kang Rae-yeon

Character: Ji-young

Jeong Seok-yong

Character: Mr. Kim

Seo Young-hwa

Character: Judge

Bae Sung-woo

Character: Seoul Probation Officer

Kim Ha-eun

Character: Juvenile Probation Counselor

Kang Hyuk-il

Character: Ok-hyun

Jun Ye-jin

Character: Kim Sae-rom

Choi Won-tae

Character: Jae-bum

Son Hee-soon

Character: Ji-hyeon's Mother