Friend, Our Legend Episode 4

Dong Su and Jun Seok’s math teacher scolds the class for their low scores, asking what their fathers do for a living while slapping their faces. Jun Seok doesn’t reply and he gets slapped until he answers that his father is a gangster and storms out the classroom. Dong Su follows him along. To ease the anger, the guys head to the nightclub. A fight ensues between their underclassmen and students from another school. While they get tangled up in the fight, the real gangsters appear. (Source: Kocowa)