During MF Bunko’s Autumn School Festival 2025 event, theRe:ZERO – Starting Life in Another World – panel confirmed that the anime’s fourth season will premiere in April 2026. The announcement arrived alongside the debut of the season’s first key visual and main promotional video, as well as the reveal that Tomokazu Sugita (Demon Slayer) will join the cast as Reid Astrea, the original Sword Saint and ancestor of the Astrea bloodline. The first three seasons of the anime are available on Crunchyroll, and it's likely the streaming service will host the fourth one too.

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