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

“Melampaui Waktu” — 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 松岡禎丞, 戸松遥, 平田広明, 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

Mempercayakan Alice kepada Rinko, Asuna tetap berada di Dunia Bawah. Sementara itu, Higa dan Kikuoka harus bekerja dengan cepat untuk mematikan fase akselerasi maksimum.