High School Conquest: War Against the Bullies

Read manhwa High School Conquest: War Against the Bullies / 고교정벌 : 일진과의 전쟁
The son of the world’s top assassin organization leader, Doyul, has transferred to a Korean high school!
Coming in with nothing, Doyul takes on a request from Dong-gu, a victim of school bullying, and begins taking down the local delinquents one by one?!
The story of a man who rises to become the strongest in the War Against Bullies universe!