Sometimes, in the world of Tokyo Ghoul, the only way to defeat monsters is to turn into one... The only group battling the ghoul threat is the Commission of Counter Ghoul, and they will employ every weapon at their disposal to defend humanity from its most dangerous predator. An experimental process that implants human investigators with a Ghoul's Kagune and endows them with Ghoul talents and capabilities is their most recent weapon in this covert conflict. But neither the technique nor the recently established Qs Squad have been tried. Will they turn into monsters or heroes? The CCG raid on the Goat stronghold left Kaneki fatally wounded, and in his desperation to see Touka once again, he gobbles up the Oggai corpses. When Kaneki suddenly consumes this unique fuel, he is forced intoa terrible metamorphosis, the result of which poses a stark new threat to Ghouls and humans alike. Will Kaneki?s degradation be what finally brings the two sides of this ancient war together?