Song Kang-ho

Sang-hyun

Gang Dong-won

Dong-soo

Bae Doona

Su-jin

IU

So-young

Lee Joo-young

Detective Lee

Lim Seung-soo

Hae-jin

Park Ji-yong

Woo-sung

Kim Sun-young

Orphanage Director's Wife

Lee Mu-saeng

Seon-ho

Lee Dong-hwi

Mr. Song

Kim Sae-byuk

Mr. Song's Wife

Bek Hyun-jin

Detective Choi

Oh Hee-jun

Detective Choi's Subordinate

Ryu Kyung-soo

Tae-ho

Jong Ho

Young-gil

Sung Yoo-bin

Young-min

Park Kang-seop

Si-woo

Kim Keum-soon

Ms. Park

Kang Gil-woo

Mr. Im

Kim Yae-eun

Mr. Im's Wife

Jung Ji-woo

Mr. Yoon's Wife

Ryu Ji-an

Yun-ah

Yun Seul

Babybox Staff 1

Jeong Jong-yeol

Babybox Pastor

Lee Ye-seo

Ye-seo

Choi Hee-jin

Mi-sook

Lee Do-goon

Police Officer

Kim Do-yeon

Seon-ah

Choi Hyo-sang

Doctor

Lee Ga-kyung

Nurse 2

Yang Gwon-seok

Taxi Driver

Lee Doo-seok

Gyu-seok

Lee Yoo-joo

Little Girl at So-young's House 1

Kim Joo-eun

Little Girl at So-young's House 3

Lim Ga-Young

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

Woo Sung-min

Orphanage Kid 1

Choi Yoon-woo

Orphanage Kid 2

Lee Dong-hyeon

Teenager 2

Hwang Do-yoon

Babybox Baby 1

Sin Chae-rin

Young Yun-ah

Na Gyeong-cheol

News Anchor (voice)

Song Sae-byuk

Orphanage Director

Park Hae-joon

Mr. Yoon