Yoon Park

as Swallow

Woo Ji-hyun

as Ho-yeon

Park Mi-hyeon

as Eun-sook

Jang He-ryung

as Eun-sook (young)

Lee Dae-yeon

as Hyun-soo

Park So-jin

as Eun-mi

Yoo In-soo

as Hyun-soo (young)

Park Myung-shin

as Jin-gyeong

Jeon Soo-jin

as Jin-gyeong (young)

Park Soo-young

as Manager Kim

Jung Seung-kil

as Tae-mok

Jang Liu

as Woman staff

Hwang Ki-seok

as Sang-woo

Kim Hyeon-mok

as Tae-mok (young)

Kim Eung-soo

as Jung-bae

Ku Sung-hwan

as Sang-hyun

Won Tae-hee

as Investigator

Kim Wang-geun

as Jung-ho

Kim Dong-hwan

as DH staff