Next Sohee

Kim Si-eun

as

So-hee

Bae Doona

as

Yoo-jin

Jung Hoe-ryn

as

Jun-hee

Kang Hyun-oh

as

Tae-joon

Bahk Woo-young

as

Dong-ho

Lee In-young

as

Eun-ah

Park Hui-eun

as

So-hee's Mother

Kim Yong-jun

as

So-hee's Father

Sim Hee-seop

as

Former Team Ma...

Yoon Ga-i

as

Ji-won

Jung Soo-ha

as

Jung-in / Cust...

Park Yoon-hee

as

Director

Choi Hee-jin

as

Newcomer Team ...

Yoo Jeong-ho

as

Head Manager

Moon Jung-woong

as

Headquarters S...

Kim Tae-yoon

as

Headquarters S...

Yoo Jae-won

as

Call Center Co...

Kim Hee-won

as

Call Center Co...

Park Seo-kyoung

as

Call Center Co...

Kim Woo-kyum

as

Detective Bae

Kim Tae-woong

as

Detective Kim ...

Song Yo-sep

as

Chief of Crimi...

Na Jong-min

as

Chief of Polic...

Heo Jeong-do

as

Homeroom Teach...

Park Soo-young

as

Vice Principal

Kwon Da-ham

as

Chief of Staff

Hwang Jeong-min

as

School Vice-Co...

Han Hye-ji

as

Former Team Ma...

Sim Ji-an

as

Former Team Ma...

Eom Ok-ran

as

Bar Owner

Kim Soo-yeong

as

Practice Room ...

Lee Hwa-young

as

Practice Room ...

Yoo Jae-yeon

as

Practice Room ...

Cho Yu-jin

as

Practice Room ...

Lee Ji-ho

as

Practice Room ...

Jang Eun-jeong

as

Practice Room ...

Lee Jong-min

as

Gopchang Resta...

Oh Joong-hoon

as

Call Center Gu...

Na Won-hee

as

New Colleague ...

Jo Ha-min

as

New Colleague ...

Kang Hee-min

as

Call Center Ag...

Ko Ha-eun

as

Call Center Ag...

Kim Do-yeon

as

Call Center Ag...

Kim Mi-ri

as

Call Center Ag...

Kim Soo-yeon

as

Call Center Ag...

Kim Chae-won

as

Call Center Ag...

Kim Hye-yoon

as

Call Center Ag...

Park Hyeon-yeo...

as

Call Center Ag...

Park Hyeon-ha

as

Call Center Ag...

Baek Seo-yeon

as

Call Center Ag...

Son Jin-joo

as

Call Center Ag...

Yang Ah-reum

as

Call Center Ag...

Yang Yeon-hee

as

Call Center Ag...

Yoon So-hee

as

Call Center Ag...

Yoon Ye-hyeon

as

Call Center Ag...

Lee Se-min

as

Call Center Ag...

Lee Soo-bin

as

Call Center Ag...

Lee Yoo-song

as

Call Center Ag...

Lee Han

as

Call Center Ag...

Im Jin-kyeong

as

Call Center Ag...

Jin Min-jeong

as

Call Center Ag...

Choi Ha-won

as

Call Center Ag...

Park Gun-joo

as

Tae-joon's Bul...

Kwon Joon-yeol

as

Tae-joon's Fac...

Cha Woo-young

as

Tae-joon's Fac...

Lee Seung-yeong

as

Tae-joon's Fac...

Yoo Yong-hee

as

Parking Lot Se...

Lee Yoon-ji

as

Female Employe...

Min Jae-won

as

Security Guard

Sin Ho-yeon

as

Security Guard

Jeon Jeong-hoon

as

Security Guard

Park Hyeon-gook

as

Human and Net ...

Park Seong-woo...

as

Forensic Exami...

Jang In-tae

as

Funeral Staff

Lee Chae-yeong

as

Redhead Trainee

Son Yoo-jin

as

Trainee

Ahn So-jeong

as

Trainee

Chae-seul

as

Trainee

Go Eun-seon

as

Chaperone Teac...

Kang Seo-hoo

as

Child Going to...

Kwon Hae-rin

as

Child Going to...

Bae Seo-eun

as

Child Going to...

Seo Hyo-won

as

Child Going to...

Seo Jae-hee

as

Child Going to...

Lee Eun-gyoo

as

Child Going to...

Kim Ki-hyun

as

Dong-ho's Fact...

Kim Jae-beom

as

Dong-ho's Fact...

Kim Jong-hak

as

Dong-ho's Fact...

Nam Yoon-gi

as

Dong-ho's Fact...

Seo Sang-woo

as

Dong-ho's Fact...

Heo Geon-haeng

as

Dong-ho's Fact...

Gal Jae-yoon

as

Funeral Direct...

Kim Jin-yeong

as

Technical Team...

Na Ye-eun

as

Jun-hee's Fan

Kim Ye-na

as

Police Station...

Chu Eun-kyeong

as

Police Station...

Kim Han-saem

as

Detective Bae'...

Moon Seong-rye...

as

Customer Seo J...