Sang-hyun 宋康昊

Dong-soo 姜栋元

Su-jin 裴斗娜

So-young 李知恩

Detective Lee 李珠英

Hae-jin 承洙

Woo-sung 朴智勇

Orphanage Director's Wife 金善映

Seon-ho 李茂生

Mr. Song 李东辉

Mr. Song's Wife 金玺碧

Detective Choi 白铉真

Detective Choi's Subordinate 吴熙俊

Tae-ho 刘庆秀

Young-gil 종호

Young-min 成侑彬

Si-woo 朴健硕

Ms. Park 金锦顺

Mr. Im 姜吉宇

Mr. Im's Wife 金月恩

Mr. Yoon's Wife 郑智佑

Yun-ah 柳智安

Babybox Staff 1 윤슬

Babybox Staff 2 장혜민

Babybox Pastor 郑宗烈

Jung-ae 정아영

Ye-seo 이예서

Mi-sook 崔熙真

Police Officer 李道均

Seon-ah 金度妍

Doctor 崔孝尚

Nurse 1 강민지

Nurse 2 李佳玹

Taxi Driver 梁权锡

Granny in Front of the Laundromat 윤상학

Gyu-seok 李斗石

4-Year-Old Woo-sung 이도규

Little Girl at So-young's House 1 이유주

Little Girl at So-young's House 2 강규린

Little Girl at So-young's House 3 김주은

19-Year-Old Girl at So-young's House 임가영

Orphanage Kid 1 禹晟敏

Orphanage Kid 2 최윤우

Teenager 1 정혁

Teenager 2 이동현

Teenager 3 김윤호

Teenager 4 김도엽

Teenager 5 송지호

Teenager 6 김수지

Detective 1 박종현

Ji-yeong 전선호

Orphanage Staff 박영준

Babybox Baby 1 황도윤

Babybox Baby 2 김다나

Babybox Baby 3 김수현

Babybox Nanny 1 배가진

Babybox Nanny 2 김진아

Sang-hyun's Mother 손영옥

Sang-hyun's Wife 정명연

Young Yun-ah 신채린

Young Dong-soo 박건우

First Director of the Orphanage 최기상

Second Director of the Orphanage 박병관

News Anchor (voice) 나경철

KTX / Subway Announcement (voice) 李佳恩

Orphanage Director 宋清晨

Mr. Yoon 朴解浚