暴力规则4.0

The most violent answer to school violence!                                                                            　　High school student Seong-jin commits suicide after being the victim of school violence for a long time. Three years later, one of his bullies Han Yeo-wool debuts as a celebrity. Seong-jin’s brother, Seong-hyeon blames himself for not recognizing the pain his brother went though and finds a comment on Han Yeo-wool’s news report that S...