Mercy is against the rules

"Okay then. You have ten seconds. But if I see your face ever again, I'll make sure Jungkook doesn't stop me from hurting you. Come on, quit trying to be a brave little hero, you're no match for us."
Megaine just started high school. Her first impression of her school is amazing. Everyone seems nice. But she soon discovers a rather dangerous bullying gang. The leader doesn't have a drop of mercy in his blood.
Can Megaine soften his heart? Or will she continue to be, not only bullied, but also hated by the entire school?