In the morning, they snuck into the dungeon from the basement of the inn.

Perhaps because it was meant to be used for evacuation purposes, but the dungeon was well-lit and well-maintained, and there were no signs of monsters. It looked less like a dungeon and more like a long underground passageway with no end in sight.

The old man walked down it, tapping the wall with the handle of his sword as he went.

「Gramps, what are you doing?」