Dungeon Corporation Job Opening

Arafo's old man demonic tribe changes career to dungeon master!?　There was no power harassment or rust left "paradise" ... ♪ - I climbed from a soldier to a general of the demon army. However, the order that came down from Onnama-no-Ma-sama was seconded to the "Dungeon Corporation" responsible for the development and management of dungeons in the demon world. Even if you challenge a new land without confidence, with the support of a beautiful secretary & cute dungeon craftsman, you succeeded in launching a very popular dungeon from a human adventurer ...!?