Son Hyun-joo

as Baek Seong-soo

Moon Jeong-hee

as Joo-hee

Jeon Mi-seon

as Min-ji

Kim Won-hae

as Baek Seong-chul

Jeong Joon-won

as Ho-se

Kim Su-an

as Soo-a

Kim Ji-young

as Pyeong-hwa

Ki Joo-bong

as Seong-soo's Stepfather

Lee Yeong-mi

as Seong-soo's Mother

Lee Jun-hyeok

as Sang-man

Noh Susanna

as Eun-hye

Jeong Min-sung

as Jo Min-hoon

Cho Han-cheul

as Jung Nam

Son Kang-gook

as Young Ho

Sung Yoo-bin

as Young Baek Sung-chul

Joo Seok Tae

as Ex-detective

Ahn Soo-ho

as Harbour Man

Kim Hak-ryong

as Goods Van Middle-aged Man

Park Geon-gyu

as Helmet Delivery Man

Kim Geun-young

as Woman Who Erases Graffiti

Jang Yun-sil

as Harbor Apartment Next Door

Lee Young-suk

as Homeless Man (uncredited)

Ju Seok-tae

as Detective (uncredited)

Kim Hye-yoon

as Student (uncredited)

Uhm Ji-sung

as Young Seong-soo (uncredited)

Lee Do-yeon

as Hui-jin