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Sword Art Online: Alicization was an anime series that ran from 2018 to 2020. In total 47 episodes of Sword Art Online: Alicization were aired. Sword Art Online: Alicization has no reported filler. In the year 2026, Kirigaya Kazuto (Kirito) was offered a job at a private enterprise, named RATH, by Kikuoka Seijirou, the VR crimes division member who Kazuto had been cooperating with ever since the end of the Sword Art Online incident. The job was to test out a 4th generation experimental FullDive machine, called the Soul Translator (STL), which ran on completely different principles than the FullDive machines before it.