(Note: Move the mouse over the text below to open the summaries of each Season, OVA, or Movie that is listed.)
~§~ Aria the Scarlet Ammo ~§~
The crime rate is getting worse and worse in Japan so the city creates a school called Tokyo Butei High School, an elite academy where “Butai” or armed detectives who are trained in various specialized fields and were to possess various kinds of weapons and capture the criminals. Kinji Tooyama is a second-year student at Toyko Butei High School, who has a specially ability but he keeps it secret to keep his ordinary life peaceful. Shortly, he decides to dropout of school, and now lives a life of studying logistics on his free time in order to cover up his powerful special ability. His peaceful days soon end, when Kinji becomes the target of the Butei Killer, a criminal known for getting rid of Butei, but a girl named Aria Kanzaki comes to his aide and saves him. From that moment on Kinji’s life as a Butei changes.
~§~ Aria the Scarlet Ammo AA ~§~
This season of Aria the scarlet Ammo is a side story from the first season, there are special students called Butei, who are able to carry weapons and investigate crimes and solve various incidents. One of those students is S-rank student at Tokyo Butei High School, Aria Kanzaki. Then there’s E-rank freshman named Akari Mamiya. Akari admires Aria and wants to become an elite Butei just like Aria but Akari isn’t really good and fails her exams. Akari has an idea to request to become Aria’s Amica (assistant), so Aria gives her a test and Akari passes. But before Akari can even become her Amica, she has to work hard and prove that she's worth teaching. Will Akari’s dream come true, or will she be forced to quit before it all even starts?