
Quick answer — Chuugaku Akamatsu worked on Aria the Scarlet Ammo (Original Creator), Aria the Scarlet Ammo Special (Original Creator), Aria the Scarlet Ammo AA (Original Story).
Chuugaku Akamatsu worked on Aria the Scarlet Ammo (Original Creator), Aria the Scarlet Ammo Special (Original Creator), Aria the Scarlet Ammo AA (Original Story).