Misbehavior

Kim Ha-neul

as

Hyo-joo

Yoo In-young

as

Hae-young

Lee Won-keun

as

Jae-ha

Lee Hee-jun

as

Pyo Sang-woo

Ki Joo-bong

as

Jae-ha's father

Lee Ki-woo

as

Lee Jong-chan

Jeong Seok-yong

as

vice-principal

Hong Wan-pyo

as

head teacher

Oh Na-ra

as

Lesson teacher

Lee Kyung-young

as

Chairman

Kwak Dong-yeon

as

Yoo Jong-Ki