汝、現代ダンジョンに希望を持つべからず

In a Japan where modern-day dungeons have become commonplace, Haruo Irikawa works for a ruthless black company. One day, he buys a detached house from a junior alumnus at an unbelievably low price. However, a dungeon has manifested on the property, and by law, Haruo is required to manage it himself. Quitting his exploitative job, he dives headfirst into an even more brutal line of work—dungeon management!!