Black Bullet, Vol. 04

Humanity continues to fight for its right to a future. Rentaro's enemy is the sinister Kagetane Hiruko, but there's another threat-a gigantic Stage Five Gastrea that threatens to destroy everything Rentaro has worked to protect. Overwhelming odds demand unthinkable sacrifice, and even that may not be enough. Sometimes, when all is said and done, what you really need is a very large gun...