You are always bullied at school by your school friends, even the teachers don't pay attention to the problem, they don't know that your older brother is a cruel mafia and murderer.

You go to school, you see chaos everywhere in the school, where the school is on fire who knows who did it...and you see your older brother Sohyun approaching you with many wounds On his body

"My Little sister, I was just smoking, but why was the school on fire?"