“There’s air inside, at least. Looks like we won’t have to wander around a dungeon filled with water.”

“Yeah, thank goodness…”

Leviathan's gate was completely submerged in water, terrifying even A-rank hunters who entered first. But this time, there was air inside. The ground was wet and slippery, seawater dripped from the ceiling, and moisture clung to the walls so heavily that every breath tasted salty. But at least we could breathe.

This was far better than exploring underwater. I dropped the load I’d been carrying. A wet squelching sound accompanied the large octopus tentacle as it landed on the …