Perfect Number

Ryoo Seung-bum

as

Suk-go

Lee Yo-won

as

Hwa-sun

Kim Yoon-sung

as

Sang-joon

Kim Bo-ra

as

Yoon-ah

Kim Ah-ron

as

girl

Cho Jin-woong

as

Detective Min-...

Lee Seok-jun

as

Nam Tae-woo

Kwak Min-ho

as

Chul-min

Lim Sung-Min

as

Jung-sook

Kwon Hae-hyo

as

Team Leader

Kim Joo-ryoung

as

Madame