Following a third global war that left Japan in shambles, the Vischio organization took control of Tokyo and renamed it Toshima. Battle games known as Igura, overseen by the Vischio, take place in its back alleys, in which competitors battle and bathe in each other's blood to earn the right to face the tournament's king, Il-re. Bl@ster, a similar but greatly different game that outlaws murder and the use of weapons, is a similar but dramatically different game from Igura. The only way to win is for the opponent to be knocked out. At Bl@ster, Akira, a young guy who has been estranged from his family, is renowned to be unbeatable. His existence on top, however, is devastated when he