Kanta Kamei

Ten years after the Great War against the demon-beasts, the empire rules over the world and prosperity relies on the massive use of aer. Yuri Lowell and Flynn Scifo are two young men who have just enrolled the ranks of the prestigious Imperial Knights. One day, they are sent to the town of Ceazontania, where abnormal aer activity has reportedly caused the proliferation of horribly mutated beasts, with serious threat for the whole region.

In the year 2072, the world's energy problems seem solved by a network of cross-dimensional electric-field inductors called "coils" that extract energy from a seemingly infinite source. That source is the W dimension, a fourth plane that exists beyond the X, Y, and Z dimensions. In this world, unofficial "illegal" coils harness powers that the police can't hope to counter. (imdb)

The final chapter of the anime adaptation series based on Fumiaki Maruto's romance comedy light novel series