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

Jang Hye-min

Babybox Staff 2

Jeong Jong-yeol

Babybox Pastor

Jung Ah-young

Jung-ae

Lee Ye-seo

Ye-seo

Choi Hee-jin

Mi-sook

Lee Do-goon

Police Officer

Kim Do-yeon

Seon-ah

Choi Hyo-sang

Doctor

Kang Min-ji

Nurse 1

Lee Ga-kyung

Nurse 2

Yang Gwon-seok

Taxi Driver

Yoon Sang-hak

Granny in Front of the Laundromat

Lee Doo-seok

Gyu-seok

Lee Do-gyoo

4-Year-Old Woo-sung

Lee Yoo-joo

Little Girl at So-young's House 1

Kang Gyoo-rin

Little Girl at So-young's House 2

Kim Joo-eun

Little Girl at So-young's House 3