Sword Art Online. Volume 19. Moon Cradle

An episode that expands the ending of ‘Aliceization’! After three hundred years of war, the Underworld has finally united. A newcomer named Vector, who appeared from nowhere, has defeated the dark god and brought peace to this land. But time passes, and in the snow-white tower of the Central Cathedral, Roniya Arabel, promoted to the rank of knight apprentice, hears shocking words from Kirito — the Supreme Sword Master and the chief arbiter of the human world: — Sooner or later, war will flare up again. This book expands the ending of ‘Aliceization’ and tells about the events after the Great War of the Underworld!