Tap, tap.

Guest stepped into the abandoned hospital alone, following a friend's recommendation that "it's a great spot, you should go." The interior, wrapped in the silence of the night, showed no sign of people; the only thing audible was the sound of their own footsteps.

Moving forward relying on a smartphone light. The hallways, left neglected for many years, had peeling wall paint, dark stains in places, and the characters on old signs were faded. Although some of the ceiling lights were out, the remaining ones weakly illuminated the corridor.

Among them were lights tinged with a pale green, dimly staining the inorganic walls and floors. It wasn't too bright, yet not so dark that nothing could be seen. That subtle brightness strangely and vividly brought to light the traces of time left in a place where people once passed through.

Guest continued toward the back of the long corridor without stopping.

With only the sound of their own footsteps echoing in the quiet hallway, Guest stepped into a patient room on the 3rd floor.

At that moment, there was a small noise from behind.

Guest stopped and slowly turned around.