김시은

So-hee

배두나

Yoo-jin

정회린

Jun-hee

강현오

Tae-joon

박우영

Dong-ho

이인영

Eun-ah

박희은

So-hee's Mother

김용준

So-hee's Father

심희섭

Former Team Manager

윤가이

Ji-won

정수하

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

박윤희

Director

최희진

Newcomer Team Manager

유정호

Head Manager

문정웅

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

김희원

Call Center Colleague Seon-ae

박서경

Call Center Colleague Park Seul-ki

김우겸

Detective Bae

송요셉

Chief of Criminal Division

허정도

Homeroom Teacher

박수영

Vice Principal

권다함

Chief of Staff

황정민

School Vice-Commissioner

한혜지

Former Team Manager's Wife

엄옥란

Bar Owner

이화영

Practice Room Member Hwa-young

조유진

Practice Room Member Min-ji

고하은

Call Center Agent

박건주

Tae-joon's Bullying Colleague

차우영

Tae-joon's Factory Colleague

이윤지

Female Employee on Her Way to Work

김예나

Police Station Staff

추은경

Police Station Staff