The cafeteria staff announces that a battle royal will take place between the seventh- and tenth-graders in the afternoon. The students are instructed to assemble at a designated square in the middle of the school. The seventh graders will assemble at the sun-square, the tenth graders at the moon-square. The battle royal is to last 24 hours and will be won or lost on the basis of winning or losing 40 percent of the total number of participants. The captain tells the students that if they do not fight together, they will lose six of their classmates.