Books like The Drifting Classroom, Vol. 10

In this volume, Sho and the other students must get past the mutant creatures in order to get out of the path of poisonous toxic clouds headed their way. Otomo and his group follow Sho, even though they have been enemies for some time now. A dying student told them to head toward Mt. Fuji where they would find "paradise", but once they arrive they find something almost too strange to comprehend! Will the mutant creatures get them, will they starve to death, or will they continue to kill each other before they find a way to get back home to their own time? Only one more volume in which to find out.