Bae Doona

Yoo-jin

Choi Pyung-ho

Executive Producer

Yoo Jeong-ho

Head Manager

Sim Hee-seop

Former Team Manager

Heo Jeong-do

Homeroom Teacher

Park Hui-eun

So-hee's Mother

Choi Hee-jin

Newcomer Team Manager

Yoon Ga-i

Ji-won

Kang Hyun-oh

Tae-joon

Jung Hoe-ryn

Jun-hee

Park Yoon-hee

Director

Kim Woo-kyum

Detective Bae

Kim Yong-jun

So-hee's Father

Song Yo-sep

Chief of Criminal Division

Na Jong-min

Chief of Police Station

July Jung

Director

Kim Si-eun

So-hee

Bahk Woo-young

Dong-ho

Lee In-young

Eun-ah

Jung Soo-ha

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

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 Tae-woong

Detective Kim / Customer Yoon Won-sang (voice)