In a world where the "Great Hole of Babel" exists and monstrous beings that defy human understanding roam freely, Tadato Ajiyama is just an ordinary explorer. The only thing that sets him apart is his unique ability: the power to hear "hints for strategy". Though he has always been looked down upon and lived a life without ambition, Ajiyama is about to discover something that will change everything. His extraordinary ability holds the potential to surpass even the most legendary heroes. As he uncovers the true extent of his powers, a journey full of revelation and unimaginable challenges awaits.