Original TV anime from Danganronpa's Kazutaka Kodaka and Rui Komatsuzaki.

Long ago, the "Kantou" and "Kansei" countries had a war that divided the world. But at the end of the war, Kansei became a vassal to Kantou. However, Kansei's government and police force declined, and crime became rampant. The criminals are called "Akudama."