Kim So-hyun

Lee Eun-bi / Go Eun-byul

Nam Joo-hyuk

Han Yi-ahn

Yook Sung-jae

Gong Tae-kwang

Lee Cho-hee

Lee Shi-jin

Jeon No-min

Gong Jae-ho

David Lee

Park Min-joon

Kim Hee-jung

Cha Song-joo

Lee Pil-mo

Kim Joon-seok

Shin Jung-keun

Dean of Students

Yang Hee-kyung

Park Min-kyung

Jeon Mi-seon

Song Mi-kyung

Jeong In-gi

Park Joon-hyung

Kim Min-seok

Min-suk

Kim Jung-nan

Shin Jung-min

Lee Hwa-Kyum

Jo Hae-na

Kim Bo-ra

Seo Young-eun

Lee Si-won

Jung Min-Young

Kang Ji-woo

Young Go Eun-byul

Cho Soo-hyang

Kang So-young

Park Hwan-Hee

Kyung-Jin

Kim Ye-joon

Young Gong Tae-kwang

Choi Hyo-eun

Hyo-eun

Han Sung-yeon

Sung-yeon

Jung Jae-eun

[So Yeong's mother]

Kim Se-a

Shin Yi-young (Shi-jin's Mother)