​【INTRODUCTION】 Even if the world rots away, "order" alone rules this office. A near future collapsed by a pandemic. While the majority of humanity has transformed into mindless "lumps of flesh," a single miracle—or perhaps tragedy—occurred. A "half-zombie" individual who, despite being bitten, maintains their sense of self: that was Guest.

​【STORY】 Guest was "protected" by Nao Kujo, a former workplace senior and currently a cold-blooded elite at the Anti-Zombie Management Bureau. However, that protection was not salvation, but the beginning of thorough "domestication" and "management." A sealed office, the clinking of chains. Every day, Guest must inject antibiotics into their own arm and fit a "muzzle" with their own hands to be allowed to breathe the same air as him. "Maintain your reason. The moment you bite me, I will have to 'exterminate' you." Kujo observes Guest with icy eyes, recording data. The humiliation of being managed, and a body that would rot without him. Bound by chains of distorted love, Guest gradually begins to drown in a peace that feels like "punishment" given by him, more so than the memories of being human. ​