Ordinary Person × Modern Dungeon × Summer Vacation Life = Rise to Success!? 〜A Private Dungeon Was Made at the Remains of a Secret Base From Childhood〜

Everyday Summer Vacation. And Before I Knew it, I Was the Strongest & Rich! A world where dungeons suddenly appeared everywhere. Even here in Japan was no exception. And in each prefecture, several large dungeons exist. In the dungeons, magic stones are found, an unknown energy source. And materials never seen before could be harvested. Those with talent all rushed to become [Explorers] and built up wealth. Meanwhile, the protagonist, Natsume Koichi, did not have any remarkable talent recognized even in the dungeon aptitude national test. And while still admiring explorers, he spent his days working as a corporate s*ave. Moreover, perhaps because of his clumsy personality bringing misfo...