Yoo Gong

Kang In-ho

Gong Yoo

Yu-mi Jeong

Seo Yoo-jin

Jung Yu-mi

Hyeon-soo Kim

Kim Yeon-doo

Kim Hyeon-soo

Kim Yeondu

Kim Hyun-soo

Ji-yeong Kim

Jin Yoo-ri

Jung In-seo

Jin Yoo-ri

Jeong In-seo

In-seo Jeong

Jeon Minsu

Baek Seung-hwan

Jeon Min-soo

Baek Su-ho

Seung-hwan Baek

Headmaster twin

Jang Gwang

Principal / Principal's Brother

Jang Kwang

Hye-jin Park

Park Bo-hyeon

Kim Min-sang

Yoon Ja-ae

Kim Joo-ryoung

Gwang Jang

Young-hoon

Lim Hyun-sung

So-yeon Jang

Yoon Ja-ae

Kim Joo-ryeong

Attorney Hwang

Jeon Kuk-hwan

Detective. Jang

Um Hyo-sup

Attorney Hwang

Jeon Gook-hwan

Prosecutor

Choi Jin-ho

In-ho's mother

Kim Ji-young

Judge

Kwon Hong-suk

Police Officer Jang

Uhm Hyo-seop

Headmaster's wife

Park Hye-jin

Young-soo

Uhm Ji-sung

Auto Repair Shop Owner

Lee Sang-hee

Professor Kim Jung-woo

Nam Myung-ryeol

Hostess 2

Park Kyoung-hee

Courtroom Sign Language Interpreter

Jang So-yeon

Hong Suk-youn

School Custodian

Hong Seok-yeon

Broadcasting Station PD

Heo Jae-ho

Publishing Company Employee

Jung Hyung-suk