The door to the medical bay opened, but beyond it wasn't the gloomy corridor of the Unicorne; it was pitch-blackness so absolute that no distance could be discerned.
Immediately after, everyone present began to tremble inexplicably, a fear that seemed to emanate from the depths of their souls.
"Clang!" Charles's Anchor Hook shot out in an instant, lodging itself firmly into the door.
With a fierce jerk, the door slammed against the door frame.
Yet, just as it was about to close, it stopped abruptly. Accompanied by a faint creak, the door slowly began to open once again.
At this moment, Feierbahah too realized the gravity of the situation; his expression panicked, he quickly rushed to Charles's side and helped him off the operating table.
A black substance like tar spread out from behind the door, moving like a liquid creature and devouring everything it touched.