The cessation of alien screeches and the collapse of the walls happened virtually simultaneously.
The walls and soil making up the sewers melted like snow under the strong sunlight. In the next instant, thirteen snake-like shadows flew out from the large hole, hovering in mid-air. It was only then, under the illumination, that they were able to see that these were thirteen folding knives, each engraved with a serpentine pattern.
The tension, which was already extremely high, reached a fever pitch. Those who were still alive -- those who had not yet lost their human shape -- held their breath, stood still, and stared at the large hole as the sound of footsteps approached them.
"Oh my, everyone has gathered here."
Out of the pitch-black hole, he emerged under the dim light with a slow and composed rhythm.