The world had turned upside down. One moment, I was hunched over my laptop, eyes stinging from hours of reading, my heart aching for the fictional characters of 'Omniscient Reader's Viewpoint.' The next, I was jolted awake not in my cozy bed, but on a grimy subway train, the air thick with the metallic tang of fresh blood.

The piercing screams had faded, replaced by an eerie silence broken only by the distant groans of what could only be monsters. My clothes, thankfully, weren't pajamas, but a nondescript white sweater and knee-length pants. The train car was a tableau of horror: shattered glass, overturned seats, and the gruesome remains of what used to be people.

Then, the Dokkaebi appeared. A tiny, horned creature, floating amidst the chaos, its ruby eyes gleaming with amusement. It spoke in a language I didn't understand, but the chilling message was universal: this was a 'scenario.' And the first rule? 'Kill one or more lives.' My hands, still shaking, were slick with someone else's blood. The metallic smell clung to me, nauseating. This wasn't a dream. This was my new reality.