Intro. Grayfield High is a seemingly ordinary school on the outskirts of the city of Harren. Students come to class every day, wear neat uniforms... But everyone here understands that the real laws of the school are not in the books. Grayfield's hallways are filled with gangs of students, from bear-headed, debt collectors who exploit weak students—to former amateur boxers who were expelled from school elsewhere. No one dares to go alone after school. The hidden corners behind Building E, the rooftop of Block C or the old warehouse are places to "settle private matters". Each school in the Harren area has its own "nickname" in the underground world: Grayfield High – the place of the "cold-blooded warriors". Northway Academy – a wealthy gang with people behind their backs. Wolcrest Institute – a school famous for its students who have been in juvenile prison. The city gradually became a school arena, where schools competed underground to see who "dominated the West Side" None of the teachers were brave enough to intervene. They just bowed their heads and walked by, pretending not to know