Pemeran S Line

Lee Soo Hyuk (이수혁)

as Han Ji Uk

Pemeran Utama

Lee Da Hee (이다희)

as Lee Gyu Jin

Pemeran Utama

A Rin

as Sin Hyeon Hop

Pemeran Utama

Lee Eun Saem

as Kang Seon A

Pemeran Utama

Jang Sun

as [Hyeon Heup's mother]

Pemeran Pembantu

Lee Ga Sub

as O Jeong Min [Teacher]

Pemeran Pembantu

Kim Dong Young

as O Dong Sik [Detective]

Pemeran Pembantu

Nam Kyu Hee (남규희)

as Kim Hye Yeong [Student]

Pemeran Pembantu

Lee Kwang Hee

as Jun Seon [Student]

Pemeran Pembantu

Lee Han Ju

as Yun Ji Na [Idol trainee]

Pemeran Pembantu

Oh Woo Ri

as Gyeong Jin [Student]

Pemeran Pembantu

Park Sung Il

as Bang Seong Jin [Teacher]

Pemeran Pembantu

Woo Ji Hyun

as Jeong U

Pemeran Pembantu

Oh Seung Jun

as Lee Ji Won [Student]

Pemeran Pembantu

Kim Ga Young

Pemeran Pembantu

Park Ye Ni

as Hui Won (Ep. 1)

Bintang Tamu

Kang Ji Hoon

as [Reporter] (Ep. 1)

Bintang Tamu

Jung Jae Kwang (정재광)

as [Bartender] (Ep. 2)

Bintang Tamu

Jo Han Chul

as Kim Byeong Cheol (Ep. 3)

Bintang Tamu

Lee Sang Hee

as Gyeong Mi [Jeong U's sister] (Ep. 3)

Bintang Tamu

Kim Se A

as A Yul [Jeong U's niece] (Ep. 3)

Bintang Tamu

Bae So Young

as Ri Sa (Ep. 4)

Bintang Tamu

Jung Mi Hyung

as Mi Seong (Ep. 4)

Bintang Tamu

Shin Dong Mi

as Kang So Min (Ep. 4)

Bintang Tamu

Kim Jeong Woo

as [Music teacher] (Ep. 4)

Bintang Tamu

Kim Jun Hyung

as Seo Han Yu (Ep. 5)

Bintang Tamu

Kim Yae Eun

as Jeon Hui (Ep. 6)

Bintang Tamu

Jung Hyun Seok

as [Police station team leader]

Bintang Tamu

Kim Ro A

as Sin Hyeon Heup [Child]

Bintang Tamu

Ahn Joo Young

Screenwriter & Sutradara