Seo Jeong-yeon

Jeong-kyeong

Sieun

An Seo-yeon

Lee Hang-na

Lee Hae-young

Yoon Chan-young

Ko Min-jae

Baek Su-ho

Kang Ki-hyeon

Kim Jong-tae

Min-jae's Father

Park Se-hyun

Jung Yu-ri

Choi Dae-hoon

Choi Soo-hwan

Oh Dong-min

Homeroom Teacher

Jung Chan-bi

Han Ju-mi

Baek Ji-won

Doctor

Park Seong-geun

Hae Young's boyfriend

Jung Hee-tae

Seo Yun's father

Son Kwang-Eop

Jung Kyung's boyfriend

Kang Seo-ha

Chemistry teacher

Cho Young-min

Director

Ryu Bo-ri

Writer