Drip, drip!
It was already past midnight, and a few clear dripping sounds echoed through the silent, empty first floor of the laboratory building.
For some reason, the floor of the lobby was covered with wet patches, looking as though someone had come in from the rain outside, making a mess of the ground, but even someone drenched in rain could not possibly leave behind so many puddles.
Moreover, the wet patches on the ground were black and foul-smelling, not like rainwater at all, but more like the fluid that forms after something decays.
The appearance of these stains made the first floor damp and foul-smelling, an environment no one could possibly withstand.
Yet on the floor of this lobby, there were many disordered footprints. Despite the chaos, a closer look would reveal that there were actually only two distinct sets of footprints: one was that of a child, with each little mark of the toes clearly visible.