As the era of peace gradually wore on, countless waves of war fever erupted around the world. High school students were especially prominent among them, particularly those dissatisfied with their lives and inclined to rebel. To ease the pressure of war, the International Union decided to confine the next generation of people about to enter society, namely high school students, in a perfectly recreated world, where they would experience the true brutality of war and thereby cool their war fever. But the one in control of everything was not the International Union. He took it upon himself to bind all the students to this cross of fate, making the slaughter even more bloody and savage...
