The God of One Moment and the Magic Poker

She follows the surveillance footage to track down a mysterious esper and arrives at this school. What she thought would be a simple, easy assignment is beset by one unexpected incident after another, drawing her into an even greater maelstrom. The mission parameters change as well. Can her record of a 100% success rate really continue?

There are 54 playing cards, each representing a different ability, but their use comes with severe restrictions. Meanwhile, dark creatures have emerged in full force, and the sealed gates to the realm of the dead have opened. With only a deck of cards whose abilities are limited, how can he face all the crises ahead and maintain a peaceful life amid the chaos?