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.
Okay, yeah, he's got an EX-ARM.
"لا شكّ في الأمر، إنّه مستعمل "إكس-آرم
Keine Frage, der muss ein Ex-Arm haben!
Es un portador, no hay duda.
Es un portador, no hay duda.
C’est un possesseur,
ça ne fait aucun doute !
Non ci sono dubbi.
Não há dúvidas, ele tem um EX-ARM!
Всё ясно, у него Экс-Арм!