Kafka finally stands beside Mina Ashiro to take down Kaiju No. 9, the childhood promise made real on a Defense Force battlefield. In the crush of the fight he pushes Kaiju No. 8 into a runaway state, smashes the shield, and drives a strike through the core—only for the true source of that power to emerge from inside No. 9. Volume 15 hands the will to the next generation while the horror climbs another floor.