Teach You a Lesson

Kim Moo-yul

Na Hwa-jin

이성민

Choi Kang-seok

Jin Ki-joo

Im Han-rim

피오

Bong Geun-dae

김종수

Hwang Gi-tae

Ahn Ha-young

Choi Ga-yun

Lee Bong-jun

Cho Gyu-cheol

이찬용

Kim Gyeong-min

이승규

Ryu Jun-hyeong

정수현

Park Dae-seok

Kim Do-geon

Kim Gwang-su

전봉석

Kim Hyeong-ju

옥진욱

Cho In-beom

유태주

Park Seong-hwan

이태환

Jang Kwon-hyuk

성노진

Principal

변윤정

Hyeong-ju's mother

김찬형

Du-mok