Rule Horror: My Prompts Refresh Every Month

This is a modern urban world that is being quietly invaded by “rules.” Anomalous phenomena, or strange tales, spread like ripples from specific places or events and affect reality. These “rules” are not laws or social norms, but supernatural behavioral codes that must be obeyed; breaking them triggers unknown, usually dangerous consequences.

Strange-tale rules come in different strengths and forms: some attach themselves to objects as “residual-level” rules, such as the subway stranding rule; some form self-contained “temporary rule zones,” such as Mistshadow Station; and some are rules of a mirror world bound to specific individuals. Their appearance is accompanied by concrete carriers, such as blood-written words or sign cards, or by specific environments and events, such as looking in the mirror at 3 a.m. or an unusual subway stop. Ordinary people are often unaware of them, while only a few individuals can sense and interpret the rules through special means, such as the protagonist’s ability.

Rule zones, such as Mistshadow Station, have their own ecology, like “shadows,” and their own operating logic of getting lost and finding direction, with the danger of assimilating real-world individuals. The entire world is in an unstable state that looks normal on the surface but is full of undercurrents, and the degree and scope of the rule invasion continue to expand.