Nezu was looking forward to his elementary school reunion—after all, his class was built on unbreakable bonds. But when his classmate, Mikio, reveals that this reunion is a matter of life and death...suddenly Nezu finds those bonds put to the test. By the author of Until Your Bones Rot!
During the 52 hours of human experimentation that drew out the weak and ugly sides of humanity, the first day comes and goes, leaving the students and teacher in a sleepless night to the second day. Between the growing bonds and deepening discord, the simple but cruel truths behind their time as children are uncovered. Those who are needed will be chosen, those who are unnecessary will be cut off. A terrifying reality awaits for the arrogant masses as they question who is deemed worthy and who is to be abandoned.