Black Bullet 4 Vengeance is Mine

is the fourth volume of the Black Bullet light novel series, written by Shiden Kanzaki and Illustrated by Saki Ukai. It was released under the Dengeki Bunko Imprint in August 2012.

Synopsis
One of the giant Monoliths that protects Tokyo Area from the virally superpowered Gastrea creatures has been destroyed. And right on schedule, the Stage Four Gastrea Aldebaran leads an invading army of the monsters into the city. The elite self-defense forces are sent to face them, and the terrible sounds of war echo across a newly christened battlefield--but soon a tense silence falls. What is it that appears before the eyes of Rentaro and his friends? The near-future thriller of post-apocalyptic survival continues!

(source: Yen Press)

Chapter List

 * Chapter 3: The Threshold of Victory
 * Chapter 4: Dogs of War
 * Chapter 5: The Price of Being a Hero
 * Epilogue: Vengeance Is Mine

Characters

 * Enju Aihara
 * Rentarou Satomi
 * Kisara Tendou
 * Tina Sprout
 * Seitenshi
 * Midori Fuse

Anime
Black Bullet 4 Vengeance is Mine is adapted into Episode 11, 12, and 13 of the Black Bullet anime.