Side story: Aria the Scarlet Ammo AA
Aria is a volatile girl who’s top dog in assault at a school for young mercenaries. When she discovers her classmate Kinji’s an ace, she strong-arms him into being her partner, but she isn’t the only femme fatale who wants a taste of his combat skills. His secret? He’s only a hotshot when he’s turned on! Aria gets Kinji for one mission, but he’ll end up with more than one finger on his trigger!
Alternative Titles: Hidan no Aria, 緋弾のアリア, Hidan no Aria: Butei ga Kitarite Onsen Kenshuu (SP)