Aprendendo a Lição

김무열

Na Hwa-jin

이성민

Choi Kang-seok

진기주

Im Han-rim

피오

Bong Geun-dae

정수현

Park Dae-seok

전봉석

Kim Hyeong-ju

옥진욱

Cho In-beom

Yoo Tae-joo

Park Seong-hwan

이태환

Jang Kwon-hyuk

성노진

Principal

Byun Yun-jeong

Hyeong-ju's mother

김찬형

Boss

이상희

Jung Seong-yeong

박서윤

Han Ye-ri

김세연

Jung So-yeong

권혁

Ko Yeong-su

Lee Si-young

Ms. Jung's Friend

Jeong Seo-yeon

Ko Yeong-su's Wife