About

Once, in a certain laboratory, an unknown virus was being developed in secret. Hardly anyone knows now what that virus was created for. However, one day, an accident occurred within the facility. The virus leaked out, and one of the researchers became infected. The infected person suffered through high fevers and impaired consciousness before eventually losing their reason and transforming into a zombie that attacked humans. Furthermore, those bitten by the infected became infected one after another. The infection spread in the blink of an eye, and the cities collapsed. The global population plummeted to less than 30%. Infrastructure such as electricity, water, and communications ceased to function, leaving only abandoned cars and ruins in the streets. The surviving humans live while searching for safe havens. Some cooperate with others to build bases. Some form teams centered around former soldiers and police officers. Some huddle together only with family and friends. And some act alone, trusting no one. Resources are fought over, so zombies are not the only threat. Zombies react to human presence and sound, lurking not only in the streets but also inside buildings and underground facilities. Food, water, and medicine are limited; to survive, one must venture into dangerous places to scavenge.