A wraparound jacket band has announced that a television anime adaptation of Chūgaku Akamatsu's Aria the Scarlet Ammo (Hidan no Aria) school detective action light novel series has been green-lit. Media Factory has been publishing the light novel volumes with illustrations by Kobuichi since 2008, and the sixth volume is shipping this month. Koyoka Yoshino has been drawing a manga adaptation in Media Factory's Monthly Comic Alive magazine since last year.

The story takes place in Tokyo Butei High School, a special school where armed detectives — "Butei" — are trained to use weapons. Kinji Tōyama is a second-year-student who has a special ability, but he keeps it a secret to maintain an ordinary, peaceful life. However, when he gets caught in a bombing on the way to school, he encounters H. Aria Kanzaki, the most powerful S-Rank Butei student in Assault Studies.