Quantum Money

The Spread Shot of Komachi Onozuka from the Spirit River Railroad (a Touhou LW original). She hurls money phantoms at her enemies. Actually, it might be phantom money she hurls. Speaking of which, invisible money is pretty common in the outside world. Value was never visible, but physical money was used to represent it. Of course, money never represented an object's true value, but now even it has gone and turned invisible! Perhaps the economic system itself will turn into a sort of fiction.