Where can I watch “Sword Art Online” Season 4 Episode 21 online?

This page provides episode info and a legal-only guide. It does not host streams or downloads. Check official platforms and licensed services for availability in your region (US first).

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Watching earlier episodes in season 4 helps you follow the plot and character arcs leading into this episode.

Watch Sword Art Online Season 4 Episode 21 Online

“Jenseits der Zeit” — Watch "Sword Art Online" Season 4 Episode 21 online in HD for free. Check streaming providers, cast, and episode details.

Sep 6, 2020 Season 4 Episode 21 23 min MA15+

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Sword Art Online Season 4

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Season 4 Episode 21 — Aired on Sep 6, 2020 • runs about 23 minutes.

Directed by 田中智也.

Written by Muneo Nakamoto.

Notable cast/guest names in this episode include Yoshitsugu Matsuoka, Haruka Tomatsu, Hiroaki Hirata, Ai Kayano.

This page includes 2 official still(s) (when available) plus legal availability links.

Looking for “watch Sword Art Online Season 4 Episode 21 online”? This is a legal-only guide with synopsis, stills, and navigation for this season.

Synopsis

Die Phase der maximalen Beschleunigung hat jetzt begonnen. Alice gelingt es tatsächlich, sich aus Underworld auszuloggen, doch Kirito scheint es nicht rechtzeitig zu schaffen. Sollte die maximale Beschleunigung nicht beendet werden können, würde das für ihn bedeuten, dass er 200 Jahre in Underworld festsitzt!