Re:Zero kara Hajimeru Isekai Seikatsu Season 4, also known as Re:ZERO -Starting Life in Another World- Season 4, is an anime based on the light novel of the same title written by Tappei Nagatsuki and illustrated by Shinichirou Otsuka.
The anime is produced by AT-X, Magic Capsule, Memory Tech, Hakuhodo DY Music & Pictures, Kadokawa, and DAXEL.
Production is handled by White Fox Studio, and it premiered on April 8, 2026, with a total of 19 episodes, each lasting 23 minutes.
The anime features the genres of drama, fantasy, and suspense.
It also features isekai, psychological, and time travel themes. The anime is rated R-17+, meaning it is intended for viewers aged 17 and older.
The cast of the anime Re:ZERO -Starting Life in Another World- Season 4 includes Yuusuke Kobayashi as Subaru Natsuki, Rie Takahashi as Emilia, Inori Minase as Rem, Satomi Arai as Beatrice, and Rie Murakawa as Ram.
Yui Horie as Felix Argyle, Kouhei Amasaki as Otto Suwen, Yuichi Nakamura as Reinhard van Astrea, Takehito Koyasu as Roswaal L Marthers, and Rie Takahashi as Satella.
The anime Re:ZERO -Starting Life in Another World- Season 4 is available on Crunchyroll, Bilibili, iQIYI, and the Muse Asia YouTube channel
Synopsis of Re:ZERO -Starting Life in Another World- Season 4
Re:ZERO -Starting Life in Another World- Season 4 tells the story of a deadly battle in Watergate City, where Priestella, Subaru, and their ally Nayirs emerge victorious, but their victory comes at a heavy price.
Through the Authority of Possession, Rem is placed in a state of suspended animation, while Crusch’s memories—and even the name Julius—are erased. As he searches for a way to save them, Subaru learns of a wise woman named Shaula, an all-seeing being said to possess all forms of knowledge.
The next destination is the Pleiades Watchtower, home to a sage—the farthest tower standing atop a vast, uncharted desert known as the Auguria Sand Dunes, a place so perilous that even the Strongest Swordsman, Reinhard, failed to conquer it. The fury of nature, unknown magical creatures, and unimaginable dangers lie ahead. Together with his friends, Subaru embarks on a life-or-death journey to reclaim what has been lost.***