The city of Crossbel, sandwiched between two great nations, is where the Uroboros gang executes its most heinous and sinister plots. A mystery drug is spreading its venom throughout the city, and the mafia and mercenary organisations appear to be involved. Add to it the loss of political order, and you have full pandemonium on your hands. In Ao no Kiseki, the world grows more genuine, and the conflicts become more dangerous. Feel the rain patter on your skin while foes lurk in the shadows.