Black Bullet

When humanity's last walls crumble, a cursed girl and her stoic guardian become the frontline against a viral nightmare.

In a near‑future Tokyo ravaged by the Gastrea virus, humanity huddles behind towering Varanium walls—one of the few substances that can harm the infected monsters. The disease has also birthed a grim silver lining: a handful of young girls, known as Initiators, carry a dormant strain of the pathogen that grants them extraordinary powers. These "Cursed Children" are paired with adult "Promoters," seasoned operatives tasked with guiding and protecting them on dangerous field missions. The series follows the unlikely partnership of Satomi Rentaro, a stoic yet compassionate Promoter, and Enju Aihara, a fiery Initiator with a sharp tongue and lethal abilities. Together, they navigate the crumbling streets outside the safety of the Monolith, confronting grotesque Gastrea creatures while uncovering the political machinations that exploit the Initiators for military gain. As the duo tackles increasingly perilous assignments, they must also grapple with the moral weight of using children as weapons in a war that threatens to consume what little remains of humanity.

Black Bullet mixes monster-hunting action with a grim premise: young girls infected with a virus are weaponized as child soldiers. Expect graphic violence against minors, sexualized depictions of underage characters, and a story that repeatedly puts children in brutal, exploitative situations.