Dungeons and Adventurers. A fantastical topic that suddenly became real on Earth ten years ago. Everything changed since the appearance of these mysterious areas that spawned monsters everywhere, and people all over the world acquired Skill Boards to combat these monsters. Mizufune Mikoto is one of those hopefuls who wants to become an adventurer, but sadly her Skill Board is empty. Since that revelation, she spends her days making dungeon models with cardboard boxes to entertain herself. Because she can't even hunt the weakest monsters by herself. One day, a prompt occurs on her Skill Board. [The God of Labyrinth is impressed at your dedication. They have decided to sponsor you!] Her empty Skill Board suddenly acquires a new skill called Dungeon Builder. This changes anything in her life. While others tries to delve within the dangerous dungeon, Mikoto can create it. Compared to the other Adventurers who gets loot from defeating monsters, she can get loot by her monsters being defeated by the adventurers. There are many more she can do with this new skill. This is the story of Mizufune Mikoto, the neighborhood dungeon maker. (This story is cross posted HERE)