Where can I watch “The Ramparts of Ice” Season 1 Episode 4 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).

Do I need to watch earlier episodes before “Impénétrable”?

Watching earlier episodes in season 1 helps you follow the plot and character arcs leading into this episode.

Watch The Ramparts of Ice Season 1 Episode 4 Online

“Impénétrable” — Watch "The Ramparts of Ice" Season 1 Episode 4 online in HD for free. Check streaming providers, cast, and episode details.

Apr 23, 2026 Season 1 Episode 4 24 min TV-PG

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The Ramparts of Ice Season 1

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Where can I watch "Impénétrable" online?

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Season 1 Episode 4 — Aired on Apr 23, 2026 • runs about 24 minutes.

Directed by 吉川志我津.

Written by 中西やすひろ.

Notable cast/guest names in this episode include Anna Nagase, 和泉風花, Chiba Shoya, 猪股慧士.

This page includes 6 official still(s) (when available) plus legal availability links.

Looking for “watch The Ramparts of Ice Season 1 Episode 4 online”? This is a legal-only guide with synopsis, stills, and navigation for this season.

Synopsis

Sous la pression de Miki, Minato clarifie ses intentions envers sa meilleure amie. Une visite imprévue fait resurgir le passé de Koyuki, provoquant une explosion de colère.