Touka and his companions finally arrive at Alion, seat of Vicius's power--only to find the goddess has used her magic to transform the entire capital into something called a Divine Labyrinth. Venturing into the labyrinth's twisted depths, the Lord of the Flies, Sogou Ayaka and the Hijiri sisters must face the fallen god Wormgandr and the hollow man Yomibito before they can proceed in search of Touka's revenge. Who will emerge victorious from this clash between S-Class heroes and the Children of Vicius? And what does Vicius have in store for them next?