Black Bullet, Vol. 1 (Light Novel) Av Shiden Kanzaki

The World Has Already Ended.The future--where a terrible battle against a parasitic virus called "Gastrea" has been fought...and lost. Humanity is cornered and lives in despair. Rentaro and Enju face constant danger in their work as a team of anti-Gastrea specialists known as "civil security officers." As if the daily fight against oblivion weren''t enough, they''ll soon face a threat that could destroy all of Tokyo...