안소희

Yun-im

박상남

Ki-haeng

이현소

Jong-won

Takuya Terada

Michio

조은유

Na-eun

오태경

Manager

배유람

Dong-hwa

신소율

Yu-jeong

고서희

Hye-rin's mother

윤준원

Detective Joo

Kim Tae-jun

Detective Park

정인기

Vice manager

장준휘

Vice head teacher

이재인

Head teacher

Yang Ji-il

Instructor

Kim Su-in