※ This novel contains numerous vulgar expressions related to the human body, as well as intense violence, profanity, non-consensual relationships, and offensive expressions. Please be cautious when reading. ― Entering the worst school on Earth! Twenty-year-old Ryu Hopi, who staked everything on revenge, hides his identity and enrolls in “Hwado.” Hwado is a prestigious 5-year school, considered one of the nation’s top educational institutions. It is the only gateway for ordinary male students to advance in society and attracts many freshmen each year. However, the number of graduates is extremely low compared to the number of enrolled students… Ryu Hopi realizes the reason behind this after being chased by a crazed serial killer while jogging on his first night after enrolling. He discovers that “Hwado,” which he thought was just a prestigious boarding school for boys, is actually a slaughterhouse where students form gangs and engage in murder and violence. And in front of Ryu Hopi appear four mysterious men… What is the hidden secret behind this worst school on Earth?