The Baki isekai spinoff anime is officially happening. On August 30, 2026, the franchise’s official anime account confirmed that Baki Gaiden: Retsu Kaioh wa Isekai Tensei Shitemo Ikko ni Kamawan is getting a TV adaptation at TMS Entertainment. What the announcement did not include is almost everything else — including a release date.
What was actually announced
TMS Entertainment will produce a TV anime of Baki Gaiden: Retsu Kaioh wa Isekai Tensei Shitemo Ikko ni Kamawan, the isekai spinoff of Keisuke Itagaki’s Baki. That is the whole of the confirmed information. No premiere window, no broadcaster or streaming partner, and no cast were named.
The reveal came from the official Baki anime account on August 30 and was reported the same day by Anime News Network and Anime Corner. TMS is not a new partner here: the studio has handled BAKI, Baki Hanma and BAKI-DOU, so the spinoff should carry the same house style as the Netflix run rather than a fresh redesign.
| Detail | Status | Source |
|---|---|---|
| Anime adaptation | Confirmed | Official Baki anime account, Aug 30, 2026 |
| Animation studio | Confirmed — TMS Entertainment | Same announcement |
| Release window | Not announced | Absent from ANN, Anime Corner and AniTrendz reports |
| Broadcaster / streamer | Not announced | Absent from the announcement |
| Cast | Not announced | Absent from the announcement |
| Director and series staff | Not announced | Absent from the announcement |
Where the “2027” figure came from
Several English-language outlets have attached 2027 to this anime, including a ComicBook.com headline stating the series arrives that year. No 2027 window appears in the announcement itself, and none of the three anime-industry outlets that covered it on the day reported one. Treat 2027 as unconfirmed.
There is a 2027 date attached to this spinoff, but it belongs to a different project. On July 28, 2026 — a month before the anime reveal — Anime News Network reported a stage adaptation of the same manga: Baki THE GRAPPLER STAGE Gaiden, running March 19 to 22, 2027 at Owl Spot in Tokyo, with Riku Noma as Retsu Kaioh and Daisuke Tanaka directing and writing. That is the only 2027 date this property has officially been given.
We are not claiming the two were deliberately conflated. But if you are trying to work out when you can watch this, the honest answer today is that nobody outside the production committee knows, and a spinoff announced with no staff and no cast is typically more than a year out.
What the manga is, and why it exists
Baki Gaiden: Retsu Kaioh wa Isekai Tensei Shitemo Ikko ni Kamawan — roughly, Baki Side Story: Retsu Kaioh Doesn’t Mind At All If He Gets Reincarnated in Another World — launched in Akita Shoten’s Monthly Shonen Champion in 2020. Sixteen volumes are out, with volume 17 due September 8, 2026, and the series has passed two million copies in circulation across print and digital.
Credits differ slightly between English outlets. Anime News Network credits Itagaki with the original concept, Sai Ihara with the story and Eiji Mutsui with the art; some sites romanise the artist’s name as Eiji Murai. We are going with ANN’s version.
The premise picks up from one of the franchise’s most divisive moments. Retsu Kaioh, the Chinese kenpo master who had been a fixture since the underground arena days, was killed in BAKI-DOU by the resurrected Musashi Miyamoto. The spinoff reincarnates him in a fantasy world, where he sets about proving that a lifetime of kenpo still works against swords, magic and monsters.
Why this is a smarter spinoff than it sounds
An isekai spinoff of a martial-arts manga reads like a joke premise, and it partly is. But it solves a real structural problem: Baki kills characters that readers are not finished with, and its own continuity has no mechanism for bringing them back. Reincarnation fiction does.
There is also a genre argument underneath it. Isekai protagonists usually arrive with modern knowledge or a cheat ability and win by out-systeming a medieval world. Retsu arrives with neither. His entire advantage is that he spent a human lifetime hitting things correctly — which makes this one of the few isekai premises where the protagonist’s edge is earned inside the story rather than granted at the door. On a shelf as crowded as this genre’s, that is a real differentiator, and it is why the manga cleared two million copies without an anime attached.
For the anime itself, the thing to watch is choreography. TMS’s Baki work is built for grounded, weighty exchanges between fighters standing on the ground. A fantasy setting asks for something else entirely, and how the studio handles that gap will decide whether this is a real show or a novelty. If you want more of where this franchise sits among anime’s heavy hitters, see our rankings of the strongest anime characters and the best anime fights. For the rest of the week’s anime announcements, we also covered the Long Summer of August 31 reveal.
Frequently Asked Questions
When is the Baki isekai anime coming out?
No release date or window has been announced. The August 30, 2026 reveal confirmed only the adaptation and the studio, TMS Entertainment. Reports of a 2027 premiere are not supported by the announcement; the only official 2027 date attached to the spinoff is its stage play, running March 19-22, 2027 in Tokyo.
What is the Baki isekai spinoff called?
Baki Gaiden: Retsu Kaioh wa Isekai Tensei Shitemo Ikko ni Kamawan, which Anime News Network renders in English as Baki Side Story – Kaioh Retsu Doesn’t Mind At All If He Gets Reincarnated in Another World.
Who is making the Baki isekai anime?
TMS Entertainment, which also animated BAKI, Baki Hanma and BAKI-DOU. No director, series composer or other staff have been named yet.
How did Retsu Kaioh die in Baki?
Retsu Kaioh was killed during BAKI-DOU in his fight with the resurrected swordsman Musashi Miyamoto. The spinoff manga begins immediately afterwards, reincarnating him in a fantasy world.
How many volumes of the Baki isekai manga are there?
Sixteen volumes have been published since the manga launched in Monthly Shonen Champion in 2020, with volume 17 scheduled for September 8, 2026. The series has over two million copies in circulation in print and digital combined.
