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 of Tokyo, save for Iriya HQ, 
is being taken over by the enemy.
كلّ طوكيو باستثناء مقرّ إيريا الرئيسيّ
تحت سيطرة العدوّ
Ganz Tokyo, ausgenommen des Firmensitzes
der Firma Iriya, ist unter feindlicher Kontrolle.
Excepto Industrias Iriya,
Excepto Industrias Iriya,
todo Tokio está bajo control enemigo.
Tout Tokyo, hormis Iriya Industries,
passe sous le contrôle de l’ennemi.
Tutta Tōkyō sta finendo sotto il dominio nemico,
 escluse le industrie pesanti Iriya.
Exceto pela sede da Iriya, Tóquio inteira
está sendo tomado pelo inimigo.
Весь Токио, за исключением штаба «Ирии»,
захвачен противником.