Ore no Turn wa Owaranai

The world was suddenly attacked by a dungeon phenomenon. Mankind was able to overcome this disaster due to the Awakeners who could control the Gate Cards that had appeared along with the dungeons. In the midst of that, Okita Hikaru, someone who was barely able to qualify as an Awakener, was being oppressed by the Elite Awakeners in a company that dealt with dungeon capturing as a business.