Sandwiched between two great powers, the city of Crossbel is the place where the Uroboros group carry out their biggest and darkest schemes. A mysterious drug is spreading its poison across the city, the mafia and the mercenary groups seem to have a role in the crimes. Add a break down to the political order to the mix, and you have complete chaos in your hands. The world becomes more real and the battles become more dangerous in Ao no Kiseki. Feel the rain patter on your skin and enemies creep up to you in the dark.