The Cursed Children arc

The The Cursed Children is the second story arc of the Black Bullet series.

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 Tokyo. 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 Hiroku, who offers him an intriguing proposition.

Civil Security at War: Kagetane Reveals Himself
To confirm Kisara's words, Rentaro begins to search through the archive, only to see that there really is no report on a Spider Type Gastrea being defeated. He then talks to Kisara about the government not sounding the alarm with him as a witness to the Gastrea's invasion, but Kisara informs him that they would not use compulsory measures such as the alarm, closing her computer whilst stating that it is now up to Civil Security to handle the job. Rentaro then asks Kisara if she would like for him to escort her home, only to be told by her that she must go to the hospital for her dialysis. Before leaving, she asks if Enju already went home, with Rentaro responding positively. Kisara then recalls the time they met Enju, one year prior the current year, and quickly enough asks Rentaro if he has any goals; noting that when he was young all he ever thought about was finding his parents. Rentaro, feeling repressed, tells Kisara to mind her own business and storms off. Leaving Kisara speechless.

Outside, Rentaro remembers his parents' funeral and the time he was asked to become a Tendō by Kikunojō Tendō. He then snaps out of his thoughts and, walking away, tells himself that he will apologize to Kisara for his behavior. Arriving at the Magata Public University Hospital, Rentaro is greeted by, after playing a prank on him, Sumire Muroto, whom he calls his Sensei. Whilst there, the two talk about Sumiaki Okajima being brought to her lab, with Sumire angry at Rentaro for wounding the Gastrea so deeply. The two then converse about Gastrea, Initiators and their abilities, with Sumire talking about Evolutionary Jump. Shortly thereafter, the two part ways, Rentaro heading home and cooking for himself and Enju. After eating, he injects Enju with an injection that prevents her Gastrea blood from taking over. They then head to bed, with Enju angry at Rentaro for rejecting her "love." The next morning, the two get ready for school, but before they step out their house, the television calls their attention as Seitenshi and Kikunojō Tendō appear, ready to deliver information to the citizens of the Tokyo area.