He Was Cool 2004

When high school girl Han Ye-won (Jeong Da-bin) finds an offensive note on the internet school board left by arrogant Ji Eun-seong (Song Seung-heon) from vocational school, she replies even more offensively. She doesn't know he's hot-tempered and well-known as a bully. So when Ji Eun Song starts looking for her to teach her a lesson, Han Ye Won realizes how big her mistake was...

Cast:

Song Seung-heon
Ji Eun-Sung 

Jeong Da-bin
Han Ye-Won 

Lee Ki-woo
Kim Han-Sung 

Lee Jin-seong
Han Seung-Pyo 

Jeong Jun-ha
homeroom teacher (uncredited) 

Park Yoon-Bae
harrassing man (uncredited) 

• Geunomeun meoshiteotda