In the deepest part of the dungeon, that cell was specifically prepared for Bloody Butterfly.
Impenetrable,
Unless by the holder of the key or the maintainer of the barrier, no one could enter it, let alone escape from it. Over eight hundred years ago, two of the four great Demon Kings perished in despair within this Black Death Barrier. It was from this that the Black Death Sky Dungeon got its name.
However,
Now?
When Fietrel opened the door, the black-haired girl, who should have been restrained at the center of the barrier, unable to move, had mysteriously disappeared?! Leaving behind nothing but an empty barrier.
After a moment of stupefaction, Fietrel's meal tray crashed to the floor.
"Where is she?! Where is Bloody Butterfly?!"
