THE DUNGEON RAID TO END ALL DUNGEON RAIDS, WITH THE SURVIVAL OF ALL HUMANITY ON THE LINE!

Ninomiya Kinji is at his wit's end--his sister Mikoto has suddenly appeared, declaring herself the doom of all the world. Driven by her own twisted sense of love, she's launched a game that will decide whether every human on the surface of the planet lives or dies. This time around, even Ninomiya's inexhaustible cunning might not be enough to save his comrades' lives...!