Rules Horror: The Ghost-Taming Master Who Doesn't Exist

Vengeful ghosts have descended upon the world, bringing bizarre rules with them! Humans can use rules to protect their rights and exploit their opponents' weaknesses. Could the ghosts' rules also conceal their weaknesses? After much exploration, humanity discovered that the rules of the horror realm could reveal the ghosts' hidden weaknesses or provide a way to counter them! The bizarre rules are like sharp blades in the ghosts' hands. Grasp the blade, and you expose where their hands are, revealing their positions! The ghost hunters must follow the blades back and cut off the ghosts' heads! Now, the world's greatest geniuses in deduction must gather to face a king-level ghostly horror, powerful enough to engulf an entire country! They must find humanity a way to survive!