The Drifting Classroom Series by Kazuo Umezu

In the aftermath of a strange earthquake, an entire elementary school vanishes, leaving nothing but a hole in the ground. While parents mourn and authorities investigate, the students and teachers find themselves somewhere far away...somewhere cold and dark... a lifeless, nightmarish wasteland in which their school stands like a lone fortress. As panic turns to terror, as the rules start to fall apart, a sixth-grade boy named Sho and his friends must fight to survive in an alien world...

Madness takes hold as the teachers and students realize they are stranded in a lifeless world! Sekiya, the cafeteria worker, takes control of the school's food supplies, enforcing his authority with a gun. As the adults start to kill one another, sixth-grader Sho makes a startling discovery--the truth of where they are and what has happened to them. Soon, Sho and his classmate Nishi are forced to venture into the wasteland beyond the school gates.. moreMadness takes hold as the teachers and students realize they are stranded in a lifeless world! Sekiya, the cafeteria worker, takes control of the school's food supplies, enforcing his authority with a gun. As the adults start to kill one another, sixth-grader Sho makes a startling discovery--the truth of where they are and what has happened to them. Soon, Sho and his classmate Nishi are forced to venture into the wasteland beyond the school gates...and choose between a slow death from hunger or a quick death at a killer's hands... less

As sixth-grader Sho fights for his life in the buried city that once was Tokyo, his cries for help travel across time and reach the ears of his mother in the distant past. But how can she save her son now? Back at the school, as their resources dwindle, the students revert to savagery and despair. Suddenly, a dying student staggers in from the wasteland, bearing signs that life may exist somewhere in their new world. Together with the last surviving adult, the children march into the desert.. moreAs sixth-grader Sho fights for his life in the buried city that once was Tokyo, his cries for help travel across time and reach the ears of his mother in the distant past. But how can she save her son now? Back at the school, as their resources dwindle, the students revert to savagery and despair. Suddenly, a dying student staggers in from the wasteland, bearing signs that life may exist somewhere in their new world. Together with the last surviving adult, the children march into the desert...but are they ready for what they find? less

When a despotic student attempts to take control of the school, Sho tries to bring his classmates to their senses. But while the students squabble over power, something horrible comes closer and closer...something that followed them out of the wasteland...something that can't be stopped. As the school is besieged, the students fight back desperately, weak with hunger. But this time, running out of food is the least of their worries. This time, they are food...

The students flee from man-eating insects, but they can't run from a deadly plague. As the situation becomes more desperate, the children arm themselves, and the school erupts into an orgy of violence. Can Sho end the savagery, or is it all he can do just to survive? Meanwhile, out in the wasteland, the shifting sands uncover a buried secret from the past...

As a plague spreads through the school, the students fight one another with their last dregs of strength! Will they choose a slow death from disease, or a violent death at the hands of their own classmates? Then, Sho and his friends must venture once more into the wasteland, where rusted ships lie beached forever in the desert that used to be the sea...

A flash flood turns the desert into a drowned world, and the students struggle to protect the school--and their precious vegetable garden--from the deluge. But just as the first vegetables are ready to harvest, the crop is infested with a strange fungus. Was all their work for nothing? Lonely for home and their parents, the students make a surrogate mother out of a statue...only to find it replaced one day by a new, terrifying idol...

Returned to his original evil personality, Sekiya forces the students to be his slaves! Escaping into the Tokyo subway, Sho and his friends explore an underground world of horror. And there, in an ancient filmstrip, they discover the terrifying story of the end of the world?

Pursued by grotesque mutants, Sho and his friends flee back to the school, where more horrors await! Barricaded against the nightmares outside, the students must perform an emergency medical operation under the most primitive of conditions. As the survivors' resources dwindle, the countdown draws closer and closer to the end...

Guided by the words of a dying student, the survivors leave the school and travel across the desert in search of "paradise"...only to find something stranger than they could ever imagine. Maddened by hunger, the students turn to a horrifying, final solution...!

As the survivors turn on one another, Sho fights for his life against his own classmates! Can the students of Yamato Elementary School actually return to their own time...and who will make the journey? The epic story of survival on a postapocalyptic earth concludes! Plus a bonus horror story!