The Shinra Banshou now activated, Miharu has finally become the Nabari no Ou, the king of the Hidden World. But at what price? Something has been lost, but no one seems to remember what—or who—it is. All that remains is a hollow in the hearts and minds of Miharu and those around him, Yukimi perhaps most of all. With their world forever changed by the events that have come to pass, the unspoken power of the Shinra Banshou looms, and Tobari, having failed to protect Miharu once already, devotes his energies to finding a way to extract and seal off the secret art for good.