Synopsis: An Ordinary Guy’s Crazy Modern Dungeon Survival!

In a world where the "Great Hole of Babel" exists and monsters beyond human understanding roam, Tadahito Miyama is just one of the ordinary explorers. ... Except for one thing: his ability to hear hints on how to conquer it. Looked down on by those around him, Miyama has lived a life without ambition, but he will eventually find out. His ability holds the power to surpass even countless heroes.