하이클래스

Cho Yeo-jeong

Song Yeo-wool

김지수

Nam Ji-sun

하준

Danny Oh

박세진

Hwang Na-yoon

공현주

Cha Do-yeong

김남희

An Ji-yong

우현주

Doh Jin-seol

Lee Ka-eun

Rachel Cho

김영재

Lee Jung-Woo

Park Eun-hye

Nam Ji-Sun's sister

박소이

Hwang Jae-In

최성준

Kwak Sang-Gun

김진엽

Jung Mi-Do

Yoon In-Jo

No-A's mother

이정열

Principal Han Gun-Young

박성환

Detective Shin

Kim Seong-tae

Alex Comer

이채민

Ahn Seung-jo

전수연

Parent

Song Hoon

Nam Ji-Sun's ex-husband