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.
I'll be the eyes on the back of your head.
سأكون أعينك الخلفية
Dann werde ich zum Auge in deinem Rücken.
Seré tus ojos en la espalda.
Seré tus ojos en la espalda.
Je surveille tes arrières !
Io diventerò i tuoi occhi sul retro!
Eu vou ser seus olhos
atrás de sua cabeça.
Я буду твоими глазами на затылке.