The Demonic Cult Leader, Seok Woncho, was a monster who even surpassed the Blood Cult Leader.Do you know who killed him?<br> “Ha Mu-baek.”<br> “But why are you bringing that up…?”<br> “Because he’s coming to our Mengryong Academy as an instructor.”<br> …Damn it. We’re screwed!<br> Ha Mu-baek, the greatest martial artist who crushed both the Demonic Cult and the Blood Cult,<br> is now assigned as an instructor at a martial arts training academy due to a political power struggle.<br> Determined to live quietly while keeping his identity hidden,<br> he soon finds himself solving the problems of cadets with heart-wrenching backstories,<br> disciplining the trashy human scum at the academy, and inexplicably becoming busier by the day…<br> Welcome! It’s your first time meeting a genius lunatic instructor, isn’t it?!