Sword Art Online: Alicization - War of Underworld is the two-part continuation of the Alicization arc that began airing in 2019. With Kirito trapped in the Underworld, Asuna and a coalition of allies mount a desperate defense as a full-scale invasion from the human world threatens to tear the realm apart. The war uncovers dark secrets about the Underworld’s origins and the true costs of power, setting the stage for a dramatic rescue and a reshaped fate for both worlds.

Sword Art Online: Alicization - War of Underworld is the two-part continuation of the Alicization arc that began airing in 2019. With Kirito trapped in the Underworld, Asuna and a coalition of allies mount a desperate defense as a full-scale invasion from the human world threatens to tear the realm apart. The war uncovers dark secrets about the Underworld’s origins and the true costs of power, setting the stage for a dramatic rescue and a reshaped fate for both worlds.