Story
AD 2072. With the invention of cross-dimensional electromagnetic inductors known as Coils, the world's energy crisis has long been solved. Kyouma Mabuchi is a "Collector," someone who makes his living by recovering illegal Coils for the powers that be. When on his latest gig he crosses paths with a mysterious girl named Mira, little does he know that their meeting will bring them both closer to the secrets behind "Dimension W," the fourth dimension--beyond X, Y, and Z--that powers the world...
Synopsis via AniList (English).
Preview
From the anime adaptation: Dimension W.