Sword Art Online
The Night-Sky Blade still

S04E20

The Night-Sky Blade

Aired August 29, 2020

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Summary

Alice and Asuna head to the World’s End Altar as Kirito confronts Gabriel. Unless he can defeat Gabriel and return to the real world before the maximum-acceleration phase begins, Kirito will have to spend the next 200 years in the Underworld.

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