[DeepL Translation - needs review] Volume 1 Introduction: The creature, called "subhuman," does not "die. One day, a high school student, Kei Nagai, dies in a car accident, but is brought back to life shortly thereafter. This means that he is a subhuman, not a human. The environment surrounding Kei has changed drastically. He finds himself on the run from the humans. His friend Kai rushed to help the frightened Kei, and together they fled into the mountains, away from the human village. Then...
