Kim Do-yeon

Ji-yeon

Son Ju-yeon

Eun-byeol

Jeong Ha-dam

Min-joo

Kang Shin-hee

Hyun-jung

Ha Seo-yul

Willy Minky

Jeon So-min

homeroom teacher

Lee Jun-hyeok

school nurse

Ko Kyu-phil

science teacher

Yang Chi-Seung

self-study supervisor teacher