A port city located on an island in East Asia... Koto. Divided into thirteen administrative districts, beneath Koto's bustling surface lies a dark underbelly comprised of slums, black markets, cults, and assassins...And then one day, the twelve most powerful gangs suddenly vanished, leaving only the Kyoukakai Association, which consists of a mere two members: a white-haired girl and... a penguin.This power vacuum led to the rise of four new organizations vying for control over a period of three years. It's up to you to end the chaos!It's fighti...