The world of Kamen Rider MY-TH now has an official companion production separate from the TV series. TTFC (Toei Tokusatsu Fan Club) has confirmed the spin-off 『仮面ライダーマイス 十二支十色』, designed to complement the story and introduce members of the Twelve Signs Alliance through a lighter, variety-show-style format.
For viewers who want to follow both without mixing up the dates, the pattern is straightforward: Kamen Rider MY-TH airs on Sundays at 9:00 a.m. in Japan; starting with episode 2, the spin-off is released at 9:30 a.m. that same Sunday on TTFC. The exception is the spin-off premiere, scheduled for Saturday, September 12, 2026, at noon in Japan. The official schedule also notes that there will be no new spin-off episode during weeks when the TV series is off the air.
Integrated schedule: main series and spin-off
| Content | Date and time in Japan | Equivalent in Brasília time (UTC-3) | Where to follow |
|---|---|---|---|
| Kamen Rider MY-TH — episode 1 | September 6, 2026, Sunday, 9:00 a.m. | September 5, Saturday, 9:00 p.m. | TV Asahi in Japan; international availability depends on licensed services |
| 十二支十色 spin-off — episode 1 | September 12, 2026, Saturday, 12:00 p.m. | September 12, Saturday, 12:00 a.m. | TTFC; also free for a limited time on Toei Tokusatsu YouTube Official |
| Kamen Rider MY-TH — episode 2 | September 13, 2026, Sunday, 9:00 a.m. | September 12, Saturday, 9:00 p.m. | TV Asahi in Japan |
| 十二支十色 spin-off — episode 2 | September 13, 2026, Sunday, 9:30 a.m. | September 12, Saturday, 9:30 p.m. | TTFC, for members |
| Later spin-off episodes | Sundays, 9:30 a.m. | Saturdays, 9:30 p.m. | TTFC, except in weeks with no TV-series episode |
The times above follow the schedule published by TV Asahi on September 6 and the main series page. The Brasília conversion uses the 12-hour difference between Japan Standard Time (UTC+9) and UTC-3.
Why spin-off episode 1 breaks the Sunday pattern
The premiere of 十二支十色 is being treated as a special launch. Its first episode, set for noon in Japan on September 12, arrives one day before MY-TH's second Sunday broadcast. Episode 2 then settles into the cadence expected for the rest of the run: the main series first at 9:00 a.m., followed by the TTFC companion at 9:30 a.m.
So the most intuitive viewing order is to watch MY-TH episode 1, then spin-off episode 1 the following Saturday, and from that point keep the weekly order of main series followed by spin-off. On the official pages reviewed, TV Asahi has not announced a total episode count for 十二支十色, so projecting an end date would not be reliable.
What 十二支十色 is and what it is meant to do
The spin-off is officially described as a TTFC companion series that looks at the background and individual traits of MY-TH's zodiac-related characters. It is not presented simply as a conventional string of dramatic scenes: the production uses a variety-show-inspired structure, with a studio host welcoming characters from the series to explore topics and situations connected to the Twelve Signs Alliance.
The first episode, titled in Japanese 「君は十二支を知っているか？」, starts with basic questions about the origin of the twelve animals, including why the sequence begins with the rat and why the cat is not part of the traditional set. The official announcement also says later episodes may cover character costumes and even family-drama-style situations. In other words, its announced function is to expand the experience of the main series, not replace episodes of the central story.
Characters confirmed for the spin-off
TV Asahi's September 6 cast list confirms Sora Otosumi, Tatsuomi Asao and Yuna Mizuki, along with several members of the Twelve Signs Alliance: Tiguru, Datto, Jao, Muton, Ende, Kei, Vanken and leader Kamuri Minetaka. Ryuzu is also credited as a voice role.
There is also a character created specifically for the spin-off's format: Makito Masamika, played by Ryo Takizawa. The announcement introduces him as the mysterious man who serves as the studio MC and welcomes guests in each episode. That detail reinforces the “show within a show” approach that separates 十二支十色 from MY-TH's regular narrative.
Where to watch: TTFC and the free first-episode exception
TTFC is the official platform hosting the spin-off. In addition to member access, episode 1 will also be available free for a limited time on Toei Tokusatsu YouTube Official during Kamen Rider MY-TH's broadcast period. From episode 2 onward, the official information reviewed highlights TTFC viewing for members.
For viewers outside Japan, two points should be kept separate: the Japanese release schedule is confirmed, but availability, subtitles and regional access may vary by service and territory. The official page should not be read as a guarantee that the spin-off will have an international simulcast in every region.
How to follow both without confusing the chronology
- Watch the weekly Kamen Rider MY-TH episode first.
- For the launch, fit 十二支十色 episode 1 into September 12, before the main series' episode 2 airs in Japan.
- Starting September 13, treat the spin-off as a companion released half an hour after the main series begins: MY-TH at 9:00 a.m. and 十二支十色 at 9:30 a.m.
- If there is a week without a MY-TH episode, do not assume there will be a spin-off installment: TV Asahi says the weekly companion release also pauses in those cases.
- Avoid inferring canon connections or consequences for the main plot beyond what each episode and the official materials actually establish.
That final distinction matters because the official description presents 十二支十色 as a companion production with explanatory and variety-style segments. This confirms a direct connection to MY-TH's characters and concepts, but it does not justify assuming that every sketch or explanation carries the same narrative weight as an episode of the main series without further confirmation.
