- AKA: ブラック・ブレット BLACK BULLET ［黒の銃弾］
- Aired: 04/08/2014
- Episodes: 13
Beings known as Gastrea have overtaken humans to the point of near extinction. Humans have built structures to keep any further Gastrea out from their area, but still have to deal with Gastrea on an everyday basis. Rentaro and Enju are part of an organization that fight Gastrea, and have the goal to protect Tokyo to the best of their abilities.