Akira has returned alive after defeating Beta, but soon Tokyo is targeted by a large-scale hacking attack. He dives into the network along with Ygg's clones to figure out the cause, and fights the enemies within, but in the meantime the hacking spreads to the entire world.

It takes over military bases and fires a volley of ICBMs, seeking to destroy the entire world. In order to save humanity, Akira makes a decision born of love.
But that might prove more damaging 
to Japan than the Tokyo Attack!
لكنّ فعل ذلك قد يلحق ضرراً باليابان
!أكبر من هجوم طوكيو الإرهابيّ
Aber das könnte für Japan schlimmer ausgehen
als der Terroranschlag von Tokyo!
¡Japón recibirá aún más daños
que en el ataque terrorista de Tokio!
¡Japón soportará aún más daños
que en el ataque terrorista de Tokio!
Mais après ça,
Ma, se farai una cosa simile,
Mas isso pode causar mais danos
ao Japão que o Ataque de Tóquio!
Так ведь от этого может быть урон
посерьёзней, чем от теракта в Токио!