The last door was very unusual.
Harley had treated it just like the previous doors, merely giving her wand a light wave and waiting for it to open on its own.
Unexpectedly, the door did not budge in the slightest, showing Harley no respect at all.
Harley frowned, thinking the door was locked. None of the previous doors had been locked, so she had fallen into the habit of not using Alohomora.
"Alohomora."
An Archangel-level Unlocking Charm enveloped the door. With a click, the lock opened.
Immediately afterward, the sound of iron locks falling to the ground came from behind the door. It seemed that countless chains had been draped over it from the other side.
Yet the door before her still did not open.
Harley's brows rose slightly. Her waist-length black hair was instantly engulfed in flames, while frost spread around her body, forming a thick layer of protection.
Once her preparations were complete, Harley stepped forward and gently placed her right hand against the iron door.
The door itself was not heavy, but something behind it seemed to be blocking it.
Harley shoved hard once, yet failed to push it open.
The surprise in Harley's eyes deepened. She was, after all, an Archangel-level Assassin. There was no way her strength could be this weak.
"Looks like whatever is behind this door is quite extraordinary too."
Emerald light shimmered in Harley's eyes, and layers of green halos spread from where her palm touched the door.
The iron door suddenly vanished, leaving nothing behind, as though it had reached the end of its life in an instant.
However, the things inside the room did not spill out, because a layer of green covered the entire doorframe.
From outside, the room was utterly dark. Nor was it the kind of darkness