Synopsis:
Childhood memories resurface, but instead of bringing joy, they bring an apocalypse.
Apocalypse Survival Rule #1: Ghost-type demon beasts will prioritize attacking densely populated areas.
Apocalypse Survival Rule #2: Beware of demon beasts disguised as unusual plants.
……
Apocalypse Survival Rule #5: Humanity has already lost the skies, oceans, and the forests.
Index