The fourth season of That Time I Got Reincarnated as a Slime rolled out a new promo video, a fresh key visual, and its theme-song lineup for the back half of its run. Studio 8-Bit has Daoko on the opening and Azusa Tadokoro on the ending, with Rimuru once again voiced by Miho Okasaki.
Quick answer
SenpaiRanks tracks That Time I Got Reincarnated as a Slime Season 4 as the continuation of 8-Bit's long-running isekai, structured as a multi-cour run whose Part 1 premiered April 3, 2026. The new promo confirms Daoko performs the opening "TACTIC" and Azusa Tadokoro the ending "Hymnal," with Miho Okasaki back as Rimuru Tempest. It streams on Crunchyroll. SenpaiRanks scores the season at a 7.64 adjusted rating on its dual-axis board — a strong, broadly-liked entry in the franchise.
What landed
This is a promo-and-music drop, not a premiere announcement — the kind of beat that confirms a show is on schedule. Here's the new promo:
The cast and crew
8-Bit stays on as the studio, with Miho Okasaki anchoring the cast as Rimuru. On the music side, Daoko ("TACTIC") and Azusa Tadokoro ("Hymnal") handle the bookends. If you're a franchise completist, note the second compilation film, Tears of the Azure Sea, hits Blu-ray September 25 in Japan.
Streaming + schedule
Crunchyroll carries the simulcast. Part 1 of this season started April 3, 2026, so Part 2 slots into the same continuous run. If you're building a watchlist around it, the isekai-heavy season has plenty of company — see our best summer 2026 isekai anime hub, the full Crunchyroll summer 2026 schedule, and another returning heavyweight, Saga of Tanya the Evil II.
Where it sits on the board
Per SenpaiRanks's ranking, Slime's fourth season holds a 7.64 adjusted score — the dual-axis read tells you it's both widely watched and well-regarded, not one propped up by the other. Disagree? Rate it on its ranking page and see where your score moves the board.
Frequently asked questions
Q: Where can I watch That Time I Got Reincarnated as a Slime Season 4?
A: It streams on Crunchyroll, which has carried the franchise's simulcasts.
Q: When did Season 4 start?
A: Part 1 premiered April 3, 2026, with the season running across multiple cours.
Q: Who sings the Season 4 theme songs?
A: Daoko performs the opening "TACTIC" and Azusa Tadokoro the ending "Hymnal."
Q: Who voices Rimuru?
A: Miho Okasaki returns as Rimuru Tempest.
Q: How does Slime Season 4 rank on SenpaiRanks?
A: SenpaiRanks scores it at 7.64 adjusted on its dual-axis board — a strong, broadly-liked franchise entry.