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.
All anyone could do was watch helplessly 
as the world's fate hung in the balance.
كلّ ما كان بمقدور الجميع هو المراقبة
بلا حيلة بينما مصير العالم على المحكّ
Wir konnten nur …
Nos limitamos a observar
la pelea por el futuro del mundo.
Nos limitamos a observar
la pelea por el futuro del mundo.
Seulement,
Semplicemente,
Todos só podiam assistir à luta
que decidia o futuro do mundo.
Все могли лишь бессильно наблюдать
за тем, как судьба мира