"What does this mean?"
Looking at the markings on the doors, Claire tried pushing the one labeled "Serpentfolk Civilization," but found that it would not budge, as though sealed by some force.
"Perhaps... some kind of Key is needed to open them."
Anvis tried waving the Stellar Disk before the door, but ultimately discovered that it apparently could not be used to open these doors.
"Serpentfolk Civilization... Wait, I seem to remember something."
Raising a hand to touch the door's coarse stone surface, Claire suddenly closed her eyes slightly. Keeping one hand pressed against the limestone door, her entire bearing took on a strange quality.
"□□□...□!"
An ancient language long lost in the current era emerged from Claire's lips, carrying obscure rasping sounds and ominous hissing. It was almost impossible to imagine that such sounds could be produced by human vocal cords.
Rumble...
As Claire's voice fell silent, the door trembled once before swinging open with a resounding crash.
"What was that just now?"
Anvis glanced curiously at Claire and asked directly.
"The language of the Serpentfolk Civilization from the ancient era. It means 'open.'"
The golden-haired Half-Elf girl withdrew her hand, looking equally puzzled.
"I don't know why I know that word either. I just had a feeling that this was how the door should be opened."
"...Is that so?"
Looking at the opened door, Anvis stroked his chin, then turned to the magnificent metal door before him bearing the mark of the High Elf Civilization and tried speaking "open" in High Elven Language.
Buzz—
The dense, elegant patterns on the silver-white doors suddenly lit up. Deep-blue Mana radiance flowed through the lines, and amid the low hum of Mana resonance, the two doors quietly slid apart.
Had he not seen it with his own eyes, Anvis would have