Modern Dungeon Capture Starting With Broken Skills

In this fantasy adventure tale, an office worker finally escapes the daily grind when dungeons appear on Earth and he's saved by a swordswoman and a pixie. Monster-filled dungeons have recently appeared in our world. When average office worker Mizuki Ryosuke gets transferred to the Japanese countryside, by the time he gets there, the office is gone and a dungeon is sitting in its place. He finds a number of odd things when he ventures inside, like a fairy about to be eaten by goblins and a mysterious skill book that allows him to turn skills—even overpowered ones—into cards so he can use them at will. Rumors of Mizuki and his broken skills spread, and requests for him to hunt down rare items in other dungeons pour in. Where will Mizuki's new career take him next?.