Saki Ukai is the illustrator behind the hit light novel series Black Bullet.
Shiden Kanzaki is the author behind the hit light novel series Black Bullet.
Rentaro, Enju, Kisara, and the fearsome sniper Tina--just when they thought the future was looking slightly less uncertain, they're confronted with a terrible discovery: One of the giant monoliths that protects Tokyo Area from invasion by the monstrous Gastrea is on the verge of collapse, putting the lives of every single human within the city at risk! Is there any way to save Tokyo Area? And even if there is, what will become of Rentaro, Enju, Kisara, and Tina?
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!
With the chaos of the Third Kanto Battle subsiding, peace is finally returning to the Tendo Civil Security Agency, and Rentaro, Kisara, Enju, and Tina are taking full advantage of the quiet. But when an old friend from Rentaro's childhood reappears, their bright days turn suddenly dark--and Rentaro finds himself imprisoned for a senseless murder. He plans a desperate escape, but his enemies keep coming, and they are like nothing he's ever fought before...
The monstrous mutants created by the Gastrea virus have driven humanity to the brink of extinction. The only thing keeping them out of Tokyo are the giant Monoliths that surround the city and the efforts of civil security officers like Rentaro and Enju. But when they accept a strange mission from the Ministry of Defense, they uncover a plot by Kagetane Hiruko that could end in the destruction of humanity!
In the near future, civsecs like Rentaro Satomi and Enju Aihara are humanity's last defense against the viral life-forms known as "Gastrea." But now they're on a different mission, this one straight from the government of Tokyo Area: Stop the rampage of Kagetane Hiruko before he destroys the entire city!