Sang-hyun
Jang Hyun-sung
Eun-a
Choi Jung-won
Soo-a
Oh Yoo-jin
Park Dong-sik
Choi Min-cheol
Kim Mi-hye
Hwang Jeong-min
Park So-won
Jung Da-bin
Homeroom teacher
Kang Shin-chul
Math teacher
Choi Hee-seo
Director
Min Byung-hun
Writer
Original Music Composer
Jeong Yong-jin
Sound Supervisor
Yang Jeong-won