An EX-ARM auction is organized by an individual who calls themselves "Auctioneer." Criminal groups from all across the world flock to the Megafloat hoping to get their hands on them.

The Counter Squad is asked by the government to investigate the auction undercover as the bodyguards of Jinkokusha, the leading group in the Japanese underworld. They are immediately dragged into an inter-group conflict, and Akira loses consciousness in combat. When he wakes up, he's greeted by Auctioneer.
After the 2020 Tokyo Attack,
،بعد هجوم طوكيو الإرهابي عام 2020
Nachdem der Terroranschlag von Tokyo 2020
mais après les attentats de Tokyo,
ma dopo l'attacco terroristico di Tōkyō del 2020,
Mas após o Ataque de Tóquio em 2020,
После теракта в Токио в 2020 году