Several years after the end of a war, the city of Toshima has fallen into decay and been taken over by the crime syndicate Viscio. There, the head of the syndicate, Il Rey, has convened the battle game "Igura." Meanwhile, Akira, falsely accused of a crime, has made a deal to earn his pardon: go to Toshima, defeat Il Rey, and destroy the syndicate.

[Source: Anime News Network]