The underground sewers stretched throughout the depths of the Labyrinth.
In the middle of a long passage shrouded in thick darkness, faint shadows flickered at the edge of the lantern light that pushed back the gloom.
In this dark and damp space, every footstep echoed, and occasionally, unpleasant sounds drifted back from the far side of the darkness.
"Be careful. Watch your step, or you might fall in."
Rin, nodding at Ian's warning from behind, moved her feet cautiously.
Constructed over a vast period and constantly expanded alongside the growth of the Labyrinth, these sewers were a place where passages were so intricately intertwined that the path was nearly impossible to know.
By now, new water facilities using modern technology had replaced its primary function, but it still served as an emergency water source for the city.
A minor problem was that in such a vast and complex underground environment, rats and slimes continued to breed no matter how much cleaning was done.
