The stars were mankind's destination, but when humans returned from the sky, it was to an Earth where only the islands of Japan remained inhabitable. In this strange new world, the nations of the old Earth have carved Japan into new dominions, and humanity must follow the Testament, a guide to reenacting the events of the past, in order to reach for the stars once more. But as the nations vie for power, the old rule of might makes right comes into play. And even though each country has its own ultimate weapon, an Armor of Deadly Sins, there may be a far greater threat to mankind waiting in wings. Because the Testament ends abruptly, and its final year has arrived. Is the end of humanity at hand or can Tori Aoi and his fellow students from the floating city ship Musashi somehow affect the course of destiny in HORIZON IN THE MIDDLE OF NOWHERE?