Episodes

An anime adaptation for the Black Bullet Light Novel was announced at the Dengeki Bunko Fall Festival 2013 event on Sunday; October 6, 2013. Directing the anime is at  from scrips by Tatsuhiko Urahata. Chiho Umishima is designing the characters, while is composing the music. Leading the cast for the anime is as Rentaro Satomi,  as Enju Aihara, and  as Kagetane Hiruko. The anime is set to premiere April 8, 2014. Joining the main cast for the April Anime are voice actors as Kohina Hiruko,  as Kisara Tendo,  as Sumire Muroto, Tomoyo Kurosawa as Tina Sprout, and  as Seitenshi.

The Black Bullet Anime's first promotional video streamed December 27, 2013; featuring the Monolith and various locations in the Tokyo Area. Characters featured in the promo are Promoter Rentaro Satomi, Initiator Enju Aihara and Gastrea Sumiaki Okajima. Along with the video, various animated images were released on the Anime's main Website.

Civil Security arc
Ten years after the Gastrea parasites begin to claw their way onto the top of the food chain, humanity's hope lies at the hands of Civil Security, an organization specialized in fighting Gastrea.

Promoter Rentaro Satomi and his Initiator Enju Aihara are tasked by Kisara Tendo to investigate an area in Tokyo said to be breached by a Gastrea.

The Cursed Children arc
Rentaro speaks to Sumire about the Gastrea Virus, leaving her lab with an idea of where to begin looking for the Original Gastrea lingering around the Tokyo Area.

Shortly thereafter, Enju and Rentaro walk about and see a Cursed Child bashed by society solely because of the blood running through her veins. Confused, Rentaro is later confronted by Kagetane Hiruko, who offers him an intriguing proposition.

Legacy of the Seven Stars arc
After declaring war on Civil Security, Kagetane proceeds to the next phase of his plans: awakening the Stage V Zodiac Gastrea.

Rentaro, Shougen, and several other Promoters ready to confront them with their Initiators as they enter an area unexplored by man, facing many challenges along the way.

Assassination arc
After defeating Kagetane and taking down the Stage V Gastrea, Rentaro is given the mission of being Seitenshi's bodyguard, attending their first meeting with Sogen Saitake of the Osaka Area. Tina Sprout invades the Tokyo Area, her objective being to assassin Seitenshi and retrieve an item.

The Third Kanto War Arc
After defeating Tina and Kisara taking in Tina as a part of Tendo Civil Security Corporation, Rentaro is given the mission of defending Tokyo area from Gastrea by forming a team of civil security officers (which is called an adjuvant) while Seitenshi preparing the replacement of the Monolith, which is corroding due to injection of corrosive liquid injected by a Stage IV Gastrea.