Aria the Scarlet Ammo - S01

As crime rates keep getting worse, Japan sets up Tokyo Butei High, an elite school where "Butei," or armed detectives, sharpen their deadly skills hoping to become mercenary-like agents of justice. One such Butei is Kinji Tooyama, a curt and anti-social sophomore dropout who once studied in the combat-focused Assault Division. These days Kinji takes it easy, studying logistics to hide a powerful but embarrassing special ability. His quiet life ends when he becomes a target of the notorious "Butei Killer" and runs into an emotional hurricane and outspoken top-ranked prodigy, Aria Holmes Kanzaki, who saves his life and, after seeing what he can really do, insists he become her partner.