Sword Art Online: Alicization - War of Underworld is the climactic second half of the Alicization arc, adapting volumes 15–18 of the light novels. This guide covers the essential watch order, plot arcs, and key characters.
Episodes 1–24. Ends with the battle against Administrator.
Episodes 25–47 (often split into Part 1 and Part 2). Plot Arcs & Synopsis
The "War of Underworld" sub-arc is divided into two main parts: