The Ramparts of Ice: S01E04

Impenetrable

At Miki’s prodding, Minato clarifies his interest in her best friend. An unexpected visitor triggers Koyuki’s bad memories, leading to a harsh outburst.

The Ramparts of Ice episode 4 is titled “Impenetrable”, one of 14 episodes in the series. It first aired on April 23, 2026. This episode carries English and Japanese audio, with subtitles in Arabic, Chinese, Croatian, Czech, Danish, Dutch, English, Filipino, Finnish, French, German, Greek, Hebrew, Hungarian, Indonesian, Italian, Japanese, Korean, Malay, Polish, Portuguese, Romanian, Russian, Spanish, Swedish, Thai, Turkish, Ukrainian, and Vietnamese. It streams in up to 1080p. Running time is about 25 minutes. Next up is episode 5.