Kim Si-eun

So-hee

Bae Doona

Yoo-jin

Jung Hoe-ryn

Jun-hee

Kang Hyun-oh

Tae-joon

Bahk Woo-young

Dong-ho

Lee In-young

Eun-ah

Park Hui-eun

So-hee's Mother

Kim Yong-jun

So-hee's Father

Sim Hee-seop

Former Team Manager

Yoon Ga-i

Ji-won

Jung Soo-ha

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

Park Yoon-hee

Director

Choi Hee-jin

Newcomer Team Manager

Yoo Jeong-ho

Head Manager

Moon Jung-woong

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

Kim Tae-yoon

Headquarters Staff 2

Yoo Jae-won

Call Center Colleague Yoo-jeong

Kim Hee-won

Call Center Colleague Seon-ae

Park Seo-kyoung

Call Center Colleague Park Seul-ki

Kim Woo-kyum

Detective Bae

Kim Tae-woong

Detective Kim / Customer Yoon Won-sang (voice)

Song Yo-sep

Chief of Criminal Division

Na Jong-min

Chief of Police Station

Heo Jeong-do

Homeroom Teacher

Park Soo-young

Vice Principal

Kwon Da-ham

Chief of Staff

Hwang Jeong-min

School Vice-Commissioner

Han Hye-ji

Former Team Manager's Wife

Sim Ji-an

Former Team Manager's Son

Eom Ok-ran

Bar Owner

Kim Soo-yeong

Practice Room Member Soo-yeong

Lee Hwa-young

Practice Room Member Hwa-young

Yoo Jae-yeon

Practice Room Member Jae-yeon

Cho Yu-jin

Practice Room Member Min-ji

Lee Ji-ho

Practice Room Member Ji-ho

Jang Eun-jeong

Practice Room Member Eun-jeong

Lee Jong-min

Gopchang Restaurant Man

Oh Joong-hoon

Call Center Guide Staff

Na Won-hee

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

Jo Ha-min

New Colleague Eun-hwa

Kang Hee-min

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

Ko Ha-eun

Call Center Agent

Kim Do-yeon

Call Center Agent

Kim Mi-ri

Call Center Agent

Kim Soo-yeon

Call Center Agent

Kim Chae-won

Call Center Agent

Kim Hye-yoon

Call Center Agent

Park Hyeon-yeong

Call Center Agent

Park Hyeon-ha

Call Center Agent

Baek Seo-yeon

Call Center Agent

Son Jin-joo

Call Center Agent

Yang Ah-reum

Call Center Agent

Yang Yeon-hee

Call Center Agent

Yoon So-hee

Call Center Agent

Yoon Ye-hyeon

Call Center Agent

Lee Se-min

Call Center Agent

Lee Soo-bin

Call Center Agent

Lee Yoo-song

Call Center Agent

Lee Han

Call Center Agent

Im Jin-kyeong

Call Center Agent

Jin Min-jeong

Call Center Agent

Choi Ha-won

Call Center Agent

Park Gun-joo

Tae-joon's Bullying Colleague

Kwon Joon-yeol

Tae-joon's Factory Colleague

Cha Woo-young

Tae-joon's Factory Colleague

Lee Seung-yeong

Tae-joon's Factory Colleague

Yoo Yong-hee

Parking Lot Security Guard

Lee Yoon-ji

Female Employee on Her Way to Work

Min Jae-won

Security Guard

Sin Ho-yeon

Security Guard

Jeon Jeong-hoon

Security Guard

Park Hyeon-gook

Human and Net Staff

Park Seong-woong

Forensic Examiner

Jang In-tae

Funeral Staff

Lee Chae-yeong

Redhead Trainee

Son Yoo-jin

Trainee

Ahn So-jeong

Trainee

Chae-seul

Trainee

Go Eun-seon

Chaperone Teacher

Kang Seo-hoo

Child Going to School

Kwon Hae-rin

Child Going to School

Bae Seo-eun

Child Going to School

Seo Hyo-won

Child Going to School

Seo Jae-hee

Child Going to School

Lee Eun-gyoo

Child Going to School

Kim Ki-hyun

Dong-ho's Factory Colleague

Kim Jae-beom

Dong-ho's Factory Colleague

Kim Jong-hak

Dong-ho's Factory Colleague

Nam Yoon-gi

Dong-ho's Factory Colleague

Seo Sang-woo

Dong-ho's Factory Colleague

Heo Geon-haeng

Dong-ho's Factory Colleague

Gal Jae-yoon

Funeral Director

Kim Jin-yeong

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

Na Ye-eun

Jun-hee's Fan

Kim Ye-na

Police Station Staff

Chu Eun-kyeong

Police Station Staff

Kim Han-saem

Detective Bae's Stand-In

Moon Seong-ryeol

Customer Seo Jang-woo (voice)