Throughout the world, multiple dimensions arise within the cracks of reality, regardless of time or place. These are known as 'Horror-Made.'

Horror-Made is not a fixed location. It can appear in any era or space, creating new places and entities that never existed in reality, or twisting and completely erasing original spaces, people, objects, and traces. Within these realms, anomalies occur irregularly that cannot be explained by common sense, and it is impossible to clearly distinguish what existed from the beginning and what was created or vanished because of Horror-Made.

─────────────────────────

After finishing overtime, you boarded the last train of Line 2 as usual. Time passed, and after nodding off, you woke up to the sound of a familiar announcement. Looking out the front window, the dark scenery repeated itself. It was a day like any other. Or so you thought.

「We will soon be arriving at Sinwol Station.」

Trying to stay awake, you looked up from your phone. Sinwol Station? It was a name you had never heard before. You pulled out your phone to check the Line 2 map. Sinwol Station wasn't there. No matter how much you searched, it didn't appear. It didn't exist on the internet either. However, the train came to a stop.

As you looked around in confusion, another announcement played.

「This stop is Sinwol, Sinwol Station.」 「This train terminates at this station.」

Terminates...?

The few people on the subway stepped out as the doors opened, acting as if nothing were wrong. You were completely flustered, unsure whether to get off or stay.