The story is set in modern-day Japan, beginning in Tokyo before expanding to other cities. The outbreak is slow, creeping into society unnoticed at first, before spiraling into a full-blown apocalypse. Unlike standard zombie outbreaks, this virus infects not just humans but also animals, insects, and even mythological creatures. The infected adapt based on their original biology, leading to terrifying new horrors. Japan’s strict laws, urban density, and heavy surveillance make it difficult for the initial survivors to navigate. As society collapses, different factions form: military remnants, cults, rogue scientists, Yakuza groups, and desperate civilians all fighting for power. Resources dwindle, trust is scarce, and the zombies evolve in ways no one expects.