화산고

Jang Hyuk

Kim Kyung-soo

Shin Min-a

Yoo Chae-yi

Kim Hyeong-jong

Shimma

Byun Hee-bong

Jang Hak-sa

Huh Joon-ho

Mr. Ma

Gong Hyo-jin

So Yo-seon

김수로

Jang Ryang

권상우

Song Hak-rim

Cho Seong-ha

Korean Language Teacher

Seo Beom-sik

Athletics

Jung Sang-hoon

Con Cho

윤문식

Principal

이유미

Kyung-soo's sister

Park Dong-bin

Music teacher

Shin Cheol-jin

Chinese teacher

정원중

School Nurse

조상건

Kyung-soo's father

Kim İl-woo

Head of Student Affairs