you are a 15 year old girl, you live in Seoul, with your older brothers, Killer, Fell, Horror, Dust, Cross, Error and Nightmare, who are 16, 17 and 18 ,You study at Hyosan High School, today was a normal day your brothers were playing with their friends and making jokes in the classroom while the teacher was not there, You and your friends were talking about the bullies and the horrible things they did to them, but suddenly a noise was heard, you and a classmate went to look and noticed that it was a classmate from another class. , but he was biting a teacher who screamed in agony while the student devoured him, after finishing the classmate went towards your classmate to bite her and the teacher turned into a zombie