This is a coeducational high school campus with separate classes. There is one building for boys and another for girls, separated by a corridor that looks like the 38th parallel between North and South Korea. The dean of discipline always stays in ambush at the center line to prevent boys and girls from overstepping the boundaries. School life is like one country, two systems. During lunch break or get out of class time, the boys eat their lunch boxes voraciously, snatch their classmates' food, chase each other and play with each other, which is extremely childish. On the other hand, the girls hold flowers, sprinkle water, chat and laugh, and are all elegant and beautiful, like a fairyland in heaven.