Teach You a Lesson

Kim Moo-yul

Na Hwa-jin

Lee Sung-min

Choi Kang-seok

진기주

Im Han-rim

피오

Bong Geun-dae

Kim Jong-soo

Hwang Gi-tae

Ahn Ha-young

Choi Ga-yun

이봉준

Cho Gyu-cheol

이찬용

Kim Gyeong-min

이승규

Ryu Jun-hyeong

정수현

Park Dae-seok

김도건

Kim Gwang-su

전봉석

Kim Hyeong-ju

옥진욱

Cho In-beom

유태주

Park Seong-hwan

이태환

Jang Kwon-hyuk

성노진

Principal

Byun Yun-jeong

Hyeong-ju's mother

Kim Chan-hyung

Du-mok