Pumhaeng zero 2002

When Joong-pil, the biggest bully in his high-school by far finds himself harboring feelings for a classmate, his entire identity is thrown off balance. Suddenly his smoking, his drinking, his constant swearing and his habit of pushing underclassmen into walls don't seem like good habits anymore. Without his nastiness, who is he? He might just like this girl enough to find out, if he can figure out how.

Cast:

Ryoo Seung-bum
Park Jung-pil 

Gong Hyo-jin
Na-young 

Lim Eun-kyung
Min-hee 

Kim Kwang-il
Sang-man 

Kim Hee-jung
School Nurse 

Park Hyo-ju
Princess Oh