18: Eighteen Noir (2014)

Dong Do is an ordinary high school student who likes movies. He begins to hang around his classmate, tough Hyun Seung and his bullying clique. Cigarettes and harsh words belched out of their mouths attract him, and Dong Do thinks they are cool and wants to be like them. Then a small misunderstanding leads them to become estranged, and Dong Do gets involved in a big fight. He has a crush on Yeon Hee in the clique, and the friendship returns to him as fear of violence.