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

“Par-delà le temps” — 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 中本宗応.

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

La phase d'accélération maximale a commencé. Alice se déconnecte avec succès des enfers, mais Kirito n'arrive pas à temps. Dans le monde réel, Higa et Kikuoka se précipitent pour arrêter le STL, afin de désactiver la phase d'accélération maximale, mais...