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 Manager

Yoon Ga-i

As Ji-won

Jung Soo-ha

As Jung-in / Customer Oh Joo-yeon (voice)

Park Yoon-hee

As Director

Choi Hee-jin

As Newcomer Team Manager

Yoo Jeong-ho

As Head Manager

Moon Jung-woong

As Headquarters Staff 1 / Customer Choi Cheol-woong (voice)

Kim Tae-yoon

As Headquarters Staff 2

Yoo Jae-won

As Call Center Colleague Yoo-jeong

Kim Hee-won

As Call Center Colleague Seon-ae

Park Seo-kyoung

As Call Center Colleague Park Seul-ki

Kim Woo-kyum

As Detective Bae

Kim Tae-woong

As Detective Kim / Customer Yoon Won-sang (voice)

Song Yo-sep

As Chief of Criminal Division

Na Jong-min

As Chief of Police Station

Heo Jeong-do

As Homeroom Teacher

Park Soo-young

As Vice Principal

Kwon Da-ham

As Chief of Staff

Hwang Jeong-min

As School Vice-Commissioner

Han Hye-ji

As Former Team Manager's Wife

Sim Ji-an

As Former Team Manager's Son

Eom Ok-ran

As Bar Owner

Kim Soo-yeong

As Practice Room Member Soo-yeong

Lee Hwa-young

As Practice Room Member Hwa-young

Yoo Jae-yeon

As Practice Room Member Jae-yeon

Cho Yu-jin

As Practice Room Member Min-ji

Lee Ji-ho

As Practice Room Member Ji-ho

Jang Eun-jeong

As Practice Room Member Eun-jeong

Lee Jong-min

As Gopchang Restaurant Man

Oh Joong-hoon

As Call Center Guide Staff

Na Won-hee

As New Colleague Myeong-kyeong / Customer Koo Min-seo (voice)

Jo Ha-min

As New Colleague Eun-hwa

Kang Hee-min

As Call Center Agent / Customer Lee Joo-bin (voice)

Ko Ha-eun

As Call Center Agent

Kim Do-yeon

As Call Center Agent

Kim Mi-ri

As Call Center Agent

Kim Soo-yeon

As Call Center Agent

Kim Chae-won

As Call Center Agent

Kim Hye-yoon

As Call Center Agent

Park Hyeon-yeong

As Call Center Agent

Park Hyeon-ha

As Call Center Agent

Baek Seo-yeon

As Call Center Agent

Son Jin-joo

As Call Center Agent

Yang Ah-reum

As Call Center Agent

Yang Yeon-hee

As Call Center Agent

Yoon So-hee

As Call Center Agent

Yoon Ye-hyeon

As Call Center Agent

Lee Se-min

As Call Center Agent

Lee Soo-bin

As Call Center Agent

Lee Yoo-song

As Call Center Agent

Lee Han

As Call Center Agent

Im Jin-kyeong

As Call Center Agent

Jin Min-jeong

As Call Center Agent

Choi Ha-won

As Call Center Agent

Park Gun-joo

As Tae-joon's Bullying Colleague

Kwon Joon-yeol

As Tae-joon's Factory Colleague

Cha Woo-young

As Tae-joon's Factory Colleague

Lee Seung-yeong

As Tae-joon's Factory Colleague

Yoo Yong-hee

As Parking Lot Security Guard

Lee Yoon-ji

As Female Employee on Her Way to Work

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 Staff

Park Seong-woong

As Forensic Examiner

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 Teacher

Kang Seo-hoo

As Child Going to School

Kwon Hae-rin

As Child Going to School

Bae Seo-eun

As Child Going to School

Seo Hyo-won

As Child Going to School

Seo Jae-hee

As Child Going to School

Lee Eun-gyoo

As Child Going to School

Kim Ki-hyun

As Dong-ho's Factory Colleague

Kim Jae-beom

As Dong-ho's Factory Colleague

Kim Jong-hak

As Dong-ho's Factory Colleague

Nam Yoon-gi

As Dong-ho's Factory Colleague

Seo Sang-woo

As Dong-ho's Factory Colleague

Heo Geon-haeng

As Dong-ho's Factory Colleague

Gal Jae-yoon

As Funeral Director

Kim Jin-yeong

As Technical Team Staff / Customer Cho Sang-wook (voice) / Customer Jeong Doo-wan (voice)

Na Ye-eun

As Jun-hee's Fan

Kim Ye-na

As Police Station Staff

Chu Eun-kyeong

As Police Station Staff

Kim Han-saem

As Detective Bae's Stand-In

Moon Seong-ryeol

As Customer Seo Jang-woo (voice)