Into the Deepest, Most Unknowable Dungeon

Despite numerous attempts throughout history, no army has been able to conquer the Deepest, Most Unknowable Dungeon. Nevertheless, after Jean's passing as a temporary worker on Earth, he is reincarnated with a strong desire to explore this renowned dungeon. With proper training and careful selection of like-minded allies who also yearn for legendary status in this new realm of fantasy, he just might be able to achieve the unattainable.